Operations Manual for CDC’s COVID-19 Program for Cruise Ships Operating in U.S. Waters

alert icon

CDC’s Temporary Extension & Modification of Framework for Conditional Sailing Order (CSO) expired on January 15, 2022. CDC recommends that cruise ships operating in U.S. waters choose to participate in CDC’s COVID-19 Program for Cruise Ships.

Summary of Recent Changes

May 05, 2022

Changed cruise ship vaccination status thresholds from 95% of passengers to 90% of passengers.

Audience

This document is intended to assist foreign-flagged cruise ship[1] operators[2] that have chosen to opt into CDC’s COVID-19 Program for Cruise Ships in ensuring health and safety protections during passenger operations in a way that mitigates the risk of spreading COVID-19. Cruise ships choosing to participate in this program on a voluntary basis (“opting in”) agree to follow all recommendations and guidance issued by CDC as part of this program. These recommendations are aimed at reducing the spread of SARS-CoV-2, the virus that causes COVID-19 on cruise ships.

CDC will update this information as needed and notify cruise ship operators of such updates.


[1] For the purposes of this program, cruise ships are defined as all commercial, non-cargo, foreign-flagged, passenger-carrying vessels subject to the jurisdiction of the United States with the capacity to carry 250 or more individuals (passengers and crew) with an itinerary anticipating an overnight stay on board or a twenty-four (24) hour stay on board for either passengers or crew.

[2] U.S.-flagged cruise ships operating exclusively in U.S. waters may follow CDC’s COVID-19 Program for Cruise Ships at the cruise ship operator’s discretion and receive a color status on CDC’s Cruise Ship Color Status webpage. However, these cruise ships will not be listed as “Gray” if the operator chooses to opt out of the program. This is because these ships report cases to state and local public health departments, which exercise primary public health jurisdiction over these vessels. Interstate vessels also operate under the jurisdiction of the Food and Drug Administration’s (FDA) Interstate Travel Program under the provisions of 21 CFR 1240, 1250. U.S.-flagged cruise ships on international itineraries porting in the U.S. will be treated in the same manner as foreign-flagged cruise ships.

Purpose

CDC’s oversight and inspection of cruise ships choosing to opt into CDC’s COVID-19 Program for Cruise Ships during passenger voyages will be based on this Operations Manual. The findings and/or observations of these inspections will be shared with the cruise ship operator. Cruise ship operators are expected to align their health and safety protocols with any CDC findings and observations. Based on these inspections, CDC may also issue additional recommendations to the cruise ship operator that the operator should consider for adoption into their health and safety protocols as best practices.

Cruise ship operators participating voluntarily in this program may be asked to make their properties and records available for inspection to allow CDC to ascertain compliance with the terms of the program. Such properties and records include but are not limited to vessels, facilities, vehicles, equipment, communications, manifests, list of passengers, and employee and passenger health records.

Inspections of cruise ships operating under this program during passenger voyages:

  • May be conducted by CDC with or without prior notification to the cruise ship operator;
  • May be conducted by CDC through in-person or remote means;
  • May include CDC inspectors sailing on passenger voyages with prior notification to the cruise ship operator; and
  • Will not have an associated fee [3] or inspection score.

These instructions reflect CDC’s reasoned judgement based on the best available current science regarding the subject areas covered in the document. This guidance will be reevaluated periodically based on public health conditions and updated as needed. Cruise ship operators should carefully consider and incorporate these instructions in developing their own health and safety protocols.


[3] When not operating pursuant to CDC’s COVID-19 Program for Cruise Ships, cruise ship operators pay a fee based on the ship’s size for operational inspections or reinspections conducted by CDC’s Vessel Sanitation Program.

Applicability of the VSP 2018 Operations Manual

Cruise ship operators must continue to follow the Vessel Sanitation Program (VSP) 2018 Operations Manual pdf icon[PDF – 291 pages]. In addition to ascertaining compliance in implementing and maintaining public health standards in accordance with CDC’s COVID-19 Program for Cruise Ships, CDC inspectors will further evaluate adherence to environmental health and sanitation standards outlined in the current VSP 2018 Operations Manual.

CDC will recommend or direct the master of a vessel not to sail when an imminent health hazard is identified and cannot be immediately corrected, in accordance with VSP’s 2018 Operations Manual.

Preventive Measures

Cruise ships involve the movement of large numbers of people in settings where they are likely to have close contact with one another. Close-contact environments facilitate transmission of SARS-CoV-2 and other respiratory viruses from person to person through exposure to respiratory droplets, aerosols, or contact with contaminated surfaces. Cruise ships may also be a means by which infected persons travel between geographic locations.

Requirements

To further reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

  • Inform passengers of any mandatory public health measures prior to boarding.
  • Place posters in high-traffic areas that encourage hand hygiene to help stop the spread of COVID-19.
  • Ensure handwashing facilities are well-stocked with soap and a method to dry hands, such as paper towels or air dryers, in accordance with the 2018 VSP Operations Manual.

Cruise ship operators must continue to follow the preventive measures for crew outlined in CDC’s Technical Instructions for CDC’s COVID-19 Program for Cruise Ships Operating in U.S. Waters.

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators as best practices should:

  • Incorporate COVID-19 vaccination strategies to maximally protect passengers and crew in the maritime environment, seaports, and in land-based communities.
  • Encourage passengers to avoid touching eyes, nose, and mouth with unwashed hands.
  • Reduce face-to-face interactions between crew and passengers to the extent practicable.
  • Discourage handshaking and encourage the use of non-contact methods of greeting.
  • Promote respiratory and hand hygiene and cough etiquette.
  • Inform passengers that use of cigarettes, e-cigarettes, pipes, or smokeless tobacco can lead to increased contact between potentially contaminated hands and their mouths.
  • Place hand sanitizer (containing at least 60% alcohol) in multiple locations and in sufficient quantities to encourage hand hygiene.

Surveillance for COVID-19

Because of the close-contact environment on cruise ships and the potential for asymptomatic and pre-symptomatic transmission, it is important that close contacts of individuals with SARS-CoV-2 infection be quickly identified and tested.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

  • Implement procedures for maintaining records associated with active COVID-19 surveillance and make these records available to CDC upon request for review. These records include:
    • Surveillance log for acute respiratory illness (ARI), influenza-like Illness (ILI), pneumonia, and additional COVID-19-like illness (aCLI) symptoms, positive antigen test results, and positive nucleic acid amplification test (NAAT) results.
    • Medical documentation of prior positive SARS-CoV-2 viral test results for crew.
      • Because retesting for SARS-CoV-2 is not recommended during the 90 days post lab-confirmed diagnosis (unless symptomatic), records must be available to review the ship’s tracking of the 90-day timeframe for crew who have tested positive prior to these crew resuming routine laboratory testing.
    • Records relating to the isolation of persons positive for SARS-CoV-2 and the quarantine of close contacts. These include dates of isolation and quarantine, originally assigned cabin numbers, cabin numbers for isolation and quarantine, medical records, and sign and symptom logs.
    • Records relating to the contact tracing of any identified close contacts.
    • All medical records must be maintained for at least 90-days and must be made available to CDC upon request for review.

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators as a best practice should:

  • Consider the use of wearable recording technology (e.g., proximity bands) to rapidly identify close contacts if contact tracing is necessary.

Medical Centers

Medical centers on cruise ships can vary widely depending on ship size, itinerary, length of cruise, and passenger demographics.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

Laboratory

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

Screening of Embarking Passengers

  • Cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships Operating in U.S. Waters must screen passengers for signs or symptoms of COVID-19, known close contact exposure to a person with COVID-19 within the 10 days before embarkation, or a positive COVID-19 viral test within the 10 days before embarkation.
    • Passengers with signs or symptoms of COVID-19
      • Deny boarding if not fully vaccinated [4] and without documentation of recovery [5].
      • May board at operator’s discretion if fully vaccinated, up to date with their COVID-19 vaccines [6], or with documentation of recovery and embarkation day test is negative by viral test (antigen-negative must be confirmed with NAAT). If an alternate infectious etiology (e.g., influenza, respiratory syncytial virus (RSV), Legionella, Streptococcal pharyngitis) is identified through laboratory testing, routine infection control precautions recommended for the diagnosis should be followed.
    • Passengers who have a known close contact exposure within the 10 days before embarkation
      • Deny boarding unless fully vaccinated, up to date with their COVID-19 vaccines, or has documentation of recovery [5]
      • May board at operator’s discretion if:
        • fully vaccinated or up to date with their COVID-19 vaccines, and asymptomatic
        • with documentation of recovery from COVID-19 and asymptomatic
    • Passengers who tested positive for COVID-19 within 10 days before embarkation must be denied boarding.

[4] “Fully vaccinated” is defined as in CDC’s Technical Instructions for Implementing Presidential Proclamation Advancing Safe Resumption of Global Travel During the COVID-19 Pandemic and CDC’s associated Order. While CDC’s COVID-19 Program for Cruise Ships operates as a voluntary program and not pursuant to an order, CDC is incorporating this definition as a program component for consistency.

[5] Documentation of recovery from COVID-19 includes the following:

  • Paper or electronic copies of their previous positive viral test result (dated no less than 10 days and no more than 90 days before date of embarkation)

[6] For CDC’s COVID-19 Program for Cruise Ships, the following criteria should be used when evaluating if a traveler is up to date with their COVID-19 vaccines:

Date of booster eligibility: A traveler becomes eligible to receive a booster dose 5 months after they have completed their primary series of an mRNA vaccine, or 2 months after a single dose of Johnson & Johnson’s Janssen (J&J/Janssen) COVID-19 vaccine.

“Up to date” status: If an eligible traveler has not received a booster dose but is within 6 months after completing their primary series of an mRNA vaccine, or within 3 months after a J&J/Janssen single dose, then they can be considered up to date with their COVID-19 vaccines. If it has been more than 6 months since a traveler completed their primary series of an mRNA vaccine, or more than 3 months since a traveler’s single dose J&J/Janssen vaccine, the traveler is not considered up to date with their COVID-19 vaccines.

Example for mRNA vaccines (Pfizer BioNTech/Moderna):

  1. Traveler A received their second Pfizer BioNTech/Moderna dose on January 1, 2022, the traveler can be considered up to date with their COVID-19 vaccines until July 1, 2022. If Traveler A does not get a booster by July 1, 2022, then they will not be considered up to date with their COVID-19 vaccines.

Example for J&J/Janssen vaccine:

  1. Traveler B received their J&J/Janssen dose on January 1, 2022, then the traveler can be considered up to date with their COVID-19 vaccines until April 1, 2022. If Traveler A does not get a booster by April 1, 2022, then they will not be considered up to date with their COVID-19 vaccines.

Testing of Embarking and Disembarking Passengers for Cruise Ship Operators Choosing to Opt into CDC’s COVID-19 Program for Cruise Ships

Screening Testing of All Embarking and Disembarking Passengers
Passengers with Documentation of Recovery from COVID-19 Passengers Who Are Not Fully Vaccinated Passengers Who Are Fully Vaccinated Passengers Up to Date with COVID-19 Vaccines
Pre-embarkation Day Testing Not Applicable Viral (NAAT or antigen test)[*] no more than 3 days before boarding; NAAT is preferred Viral (NAAT or antigen test) no more than 2 days before boarding []

OR

Viral test on embarkation day
Viral (NAAT or antigen test) no more than 3 days before boarding

OR

Viral test on embarkation day

Embarkation Day Testing Not Applicable Viral (NAAT or antigen test)[*]; NAAT is preferred
Disembarkation Testing [^]  Not Applicable Viral (NAAT or antigen test) Not Applicable Not Applicable
Back-to-Back Sailing[¥] Testing Not Applicable Viral (NAAT or antigen test) Recommended Viral (NAAT or antigen test) Recommended Viral (NAAT or antigen test)

[*] Either the pre-embarkation day test or the embarkation day test must be NAAT.

[†] Fully vaccinated passengers or passengers who are up to date with their COVID-19 vaccines may use a self-test (sometimes referred to as home test)—see specifications in section below.

[^] Disembarkation testing is only required for voyages of more than 4 nights.

[¥] Back-to-back sailing refers to passengers who stay on board for two or more voyages.

  • Due to the increased transmissibility of some SARS-CoV-2 variants of concern, cruise ship operators must inform passengers of the following documentation requirements:
    • Passengers with documentation of recovery from COVID-19 must present a positive viral test result dated no less than 10 days and no more than 90 days before date of embarkation in order to be exempt from the above screening testing.
    • Passengers who are not fully vaccinated must present a negative COVID-19 NAAT test result at the time of embarkation. The specimen must be taken no more than 3 days before boarding.
    • Passengers who are fully vaccinated must present a SARS-CoV-2 negative viral test result at the time of embarkation. The specimen must be taken no more than 2 days before boarding.
      • Passengers who are fully vaccinated may use a self-test (sometimes referred to as home test)—see specifications in section below.
      • In lieu of testing pre-embarkation day, cruise ship operators may test passengers who are fully vaccinated on the day of embarkation.
    • Passengers who are up to date with COVID-19 their vaccines must present a SARS-CoV-2 negative viral test result at the time of embarkation. The specimen must be taken no more than 3 days before boarding.
      • Passengers who are up to date with their COVID-19 vaccines may use a self-test (sometimes referred to as home test)—see specifications in section below.
      • In lieu of testing pre-embarkation day, cruise ship operators may test passengers who are up to date with their COVID-19 vaccines on the day of embarkation.
    • Information requirements for pre-embarkation testing documentation:
      • Type of test (indicating it is a NAAT or antigen test)
      • Entity issuing the result (e.g., laboratory, healthcare entity, telehealth service)
      • Specimen collection date
      • Information that identifies the person (full name plus at least one other identifier such as date of birth or passport number)
      • Test result
  • Cruise ship operators must collect specimens for SARS-CoV-2 viral testing [7] as follows, unless passengers are fully vaccinated, up to date with their COVID-19 vaccines, or have documentation of recovery in the past 90 days:
    • All [8] newly embarking passengers on the day of embarkation (testing for passengers who are fully vaccinated or up to date with their COVID-19 vaccines can be performed on day of embarkation in lieu of pre-embarkation day testing).
    • All [8] disembarking passengers if the voyage is more than 4 nights. Specimens may be collected up to 24-hours prior to disembarkation but results must be available prior to disembarking.
    • All [8] passengers on back-to-back sailings prior to the ship sailing on the next voyage (this is recommended for passengers who are fully vaccinated or up to date with their COVID-19 vaccines).
  • Cruise ship operators must immediately transport the specimens to the testing equipment location. Locations may include a Clinical Laboratory Improvement Amendments (CLIA)-certified laboratory, onboard laboratory, pier-side equipment, or an offsite area.
  • Passengers who receive a positive viral test result for SARS-CoV-2 prior to embarkation, and any of their close contacts who are not fully vaccinated, must be denied boarding. Cruise ship operators may choose to deny boarding to close contacts who are fully vaccinated or up to date with their COVID-19 vaccines.
  • Cruise ship operators may use confirmatory NAAT testing for a positive antigen screening test following CDC’s Interim Guidance for Antigen Testing for SARS-CoV-2.
  • Cruise ship operators must follow their port agreements to ensure all travelers identified through embarkation and disembarkation day testing as positive for SARS-CoV-2 are appropriately managed.
  • Cruise ship operators must report all laboratory results in aggregate to CDC through the Enhanced Data Collection (EDC) form.
    • To ensure the integrity of testing, persons with positive NAAT results must not be retested, and the original positive results must be reported. Subsequent negative results do not negate an initial positive result.
    • Confirmatory testing for a positive antigen screening test should take place as soon as possible after the antigen test, and not longer than 48 hours after the initial antigen testing. If more than 48 hours separate the two specimen collections, or if there have been opportunities for new exposures, a NAAT should be considered a separate test – not a confirmation of the earlier test.
  • Medical personnel should document all positive SARS-CoV-2 test results (pre-embarkation, throughout the passenger’s voyage, and post-disembarkation) in the ships’ medical records. These medical records must be made available for CDC inspection upon request.
  • Passengers who test positive for SARS-CoV-2 via NAAT should not be retested (e.g., as part of a contact investigation) until 90 days post lab-confirmed diagnosis, unless they are symptomatic. Symptomatic passengers must be isolated and re-evaluated, including retesting for SARS-CoV-2. If an alternate infectious etiology (e.g., influenza, respiratory syncytial virus [RSV], Legionella, Streptococcal pharyngitis) is identified through laboratory testing, routine infection control precautions recommended for the diagnosis should be followed.

[7] Viral tests for SARS-CoV-2 include nucleic acid amplification tests (NAAT) and antigen tests. Examples of NAATs include but are not restricted to reverse transcription polymerase chain reaction (RT-PCR), reverse transcription loop-mediated isothermal amplification (RT-LAMP), transcription-mediated amplification (TMA), nicking enzyme amplification reaction (NEAR), helicase-dependent amplification (HDA). Tests used must be cleared or authorized for emergency use by the FDA.

[8] CDC considers all positive viral test results as new cases, unless laboratory documentation of a previous SARS-CoV-2 by viral test result within the previous 90 days is provided and the individual is asymptomatic. Cruise ship operators may use confirmatory NAAT testing for a positive antigen screening test following Interim Guidance for Antigen Testing for SARS-CoV-2. Cruise ship operators must have a protocol for evaluating documentation of recovery, including reviewing previous laboratory results.

Test Selection and Specifications for Passenger Screening Testing for Cruise Ship Operators Choosing to Opt into CDC’s COVID-19 Program for Cruise Ships

  • When choosing a testing method, cruise ship operators should consider the differences in sensitivity between NAAT and antigen tests. At this time, CDC prefers NAAT for use on cruise ships because it is less likely to miss cases of SARS-CoV-2 infection (i.e., higher sensitivity) when compared to antigen testing.
  • Cruise ship operators, at their discretion, may contact CDC at eocevent349@cdc.gov prior to procuring antigen test systems to ensure the selected test meets the specifications listed below. Include “Screening Testing for Passengers – [SHIP NAME]” in the subject line.
  • Tests must be performed as authorized under their EUA or equivalent and described in the manufacturer’s IFU. Any specimen type and source specified in the IFU may be used and must be collected by, or under the supervision of, a health care professional.
    • Refer to the FDA website for a list of the SARS-CoV-2 point-of-care and rapid tests that have received EUAexternal icon.
      • Tests that have been authorized for use in a point-of-care setting will have a W, for Waived, in the Authorized Settings column of the FDA table.
      • The laboratory or testing site must use a test authorized for point-of-care use by the FDA and must follow the manufacturer’s instructions for each test.
  • Viral test (including NAAT and antigen tests) systems must:
    • Be authorized by FDA for use in a CLIA-waived setting. Antigen tests may be authorized by the national authority of another country where the ship has operated.
    • Allow for specimen-to-test system transfer in a way that minimizes the risk of contamination.
  • For antigen testing, cruise ship operators should follow CDC’s Interim Guidance for Antigen Testing for SARS-CoV-2.
  • Shoreside testing must be conducted by a CLIA-certified laboratory using a viral test (i.e., NAAT or antigen).
  • For NAAT, the test must have been cleared or authorized for emergency use by FDA and must be a laboratory-based test or a test performed in a CLIA-certified laboratory.
    • The test must be evaluated using the FDA reference panelexternal icon for SARS-CoV-2 with a limit of detection (LoD) value ≤18,000 NDU/ml.[9]
    • For tests that do not have the FDA reference panel available, tests will be accepted with sensitivity data ≥95% using clinical samples, as indicated in the manufacturer’s IFU.
  • Self-tests, sometimes referred to as home tests or at-home tests, are tests performed by an individual at home or anywhere outside of a CLIA-certified laboratory and are only permitted for pre-embarkation testing for passengers who are fully vaccinated or up to date with their COVID-19 vaccines.
  • Self-collection of the sample is permitted with the following stipulations:
    • Self-collection must be permitted in the IFU.
    • The specimen must be collected under the observation of trained medical staff.
    • Trained medical staff may only observe the collection of a single individual at a time.
  • Staff conducting screening testing must be trained and competent in specimen collection, be able to properly use testing equipment, follow all manufacturer’s instructions, and have access to and use recommended personal protective equipment (PPE) for specimen collection, handling, and testing.
    • Cruise ship operators must maintain onboard SARS-CoV-2 testing equipment to manufacturer’s specifications.
  • The SARS-CoV-2 virus has developed mutations with the potential to negatively impact the performance of tests for its detection.
    • The FDA webpage on Molecular Tests Impacted by SARS-CoV-2 Mutationsexternal icon provides information regarding the potential impact of viral mutations on COVID-19 tests and identifies EUA-authorized tests whose performance could be affected by these mutations.
    • CDC will continue to assess the information provided by the FDA, public health authorities, and the test manufacturer to determine which tests should remain in use or be approved for future use.
  • Pre-embarkation testing for passengers who are fully vaccinated or up to date with their COVID-19 vaccines: these passengers may use a self-test (sometimes referred to as home test) that meets the following criteria:
    • The test must be a SARS-CoV-2 viral test (NAAT or antigen test) with an EUA from the FDA or the relevant national authority where the test is administered.
    • The testing procedure must include a telehealth service affiliated with the manufacturer of the test that provides real-time supervision remotely through an audio and video connection. Some FDA-authorized self-tests that include a telehealth service may require a prescription.
    • The telehealth provider must confirm the person’s identity, observe the specimen collection and testing procedures, confirm the test result, and issue a report that meets the information requirements listed below.
    • Cruise ship operators must be able to review and confirm the person’s identity and the test result details.
    • For travelers who test positive, CDC recommends the telehealth provider report positive test results to relevant public health authorities in the traveler’s location following local requirements. The telehealth provider should also counsel the traveler on what they and their close contacts should do. This would include not traveling until they complete isolation (if infected) or quarantine (if exposed), in accordance with local requirements.
  • The traveler’s pre-embarkation testing documentation must include the following information:
    • Type of test (indicating it is a NAAT or antigen test)
    • Entity issuing the result (e.g., laboratory, healthcare entity, telehealth service)
    • Specimen collection date
    • Information that identifies the person (full name plus at least one other identifier such as date of birth or passport number)
    • Test result

[9] NDU=RNA NAAT detectable unit; CDC’s 2019-nCOV RT-PCR diagnostic panel was used to define the LoD cut-off value. A high LoD indicates that the assay has a lower sensitivity which may result in more false negative results, especially in asymptomatic infected people. A lower LoD represents an assay’s ability to detect a smaller amount of viral genetic material in each sample, signaling a more sensitive test.

Management of Symptomatic Passengers and their Close Contacts for Cruise Ship Operators Choosing to Opt into CDC’s COVID-19 Program for Cruise Ships

Cruise ship operators must follow requirements as outlined in the Technical Instructions for CDC’s COVID-19 Program for Cruise Ships Operating in U.S. Waters for management of symptomatic travelers (crew and passengers) and their close contacts, including isolation, quarantine, and disembarkation protocols.

Infection Prevention and Control Plan

Infection prevention and control (IPC) is key to reducing the spread of SARS-CoV-2. Procedures and records associated with IPC implementation will be evaluated during inspections. Each cruise ship must maintain a written Infection Prevention and Control Plan (IPCP) that details standard procedures and policies to specifically address infection control and cleaning/disinfection procedures to reduce the spread of COVID-19.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must include the following as part of a written IPCP:

  • Duties and responsibilities of each department and their staff for all passenger and crew public areas.
  • Steps in IPC management and control and the triggers required for action at each step. At a minimum, triggers must address a graduated approach to IPC management in response to increasing case counts.
  • Disinfectant products or systems used, including the surfaces or items the disinfectants will be applied to, concentrations, and required contact times. Use disinfectant products or systems that are listed on the Environmental Protection Agency (EPA) List N: Disinfectants for Coronavirus (COVID-19)external icon.
  • Procedures for informing passengers and crew members that a threshold of COVID-19 has been met or exceeded. This section must address the procedures for notification of passengers and crew currently onboard the ship and those embarking the vessel on the subsequent voyage.
  • Graduated procedures for returning the vessel to normal operating conditions after a threshold of COVID-19 has been met or exceeded, including de-escalation of cleaning and disinfection protocols.
  • Procedures to protect passengers and crew from exposure to disinfectants, if not already included in the ship’s safety management system. At a minimum, this must include the following:
    • Safety data sheets (SDSs)
    • PPE per CDC guidance for crew
    • Health and safety procedures to minimize respiratory and dermal exposures to both passengers and crew

Mask Use

At this time, all persons, including port personnel, crew, and passengers are advised that CDC’s Mask Order remains in effect and requires the wearing of well-fitting masks on conveyances entering, traveling within, or leaving the United States, and in U.S. transportation hubs (see Maritime-specific Frequently Asked Questions).

  • While the Order permits temporarily removing a mask for brief periods of time while eating or drinking, removal of the mask for extended meal service or beverage consumption would constitute a violation of this Order.
  • Cruise ship operators, at their discretion, may advise all passengers and crew that they do not have to wear a well-fitting mask if outdoors. CDC still recommends that people wear a mask if they are not up to date with their COVID-19 vaccines and in crowded outdoor areas.
  • Masks do not have to be worn while inside one’s own cabin.
  • Travelers should not wear a mask when doing activities that may get the mask wet, like swimming at the beach or in recreational water facilities. A wet mask can make it difficult to breathe and may not work as well when wet. This means it is particularly important for bathers who are not fully vaccinated to maintain physical distancing of at least 6 feet (2 meters) when in the water with others who are not traveling companions or part of the same family.

Travelers Who Are Fully Vaccinated or Up to Date with Their COVID-19 Vaccines

At this time [10], cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships may only implement the following mask policies if they are classified as a Vaccination Standard of Excellence or Highly Vaccinated ship (see Cruise Ship Vaccination Status Classifications in the Technical Instructions):

  • For ships with at least 95% of crew and 90% of passengers fully vaccinated or up to date with their COVID-19 vaccines, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships, at their discretion, may advise passengers and crew that they do not have to wear a mask in any areas. Confirmation that 95% of crew and 90% of passengers are fully vaccinated or up to date with their COVID-19 vaccines must be made available to CDC upon request.

Due to the increased transmissibility of some SARS-CoV-2 variants of concern, cruise ship operators are advised to reconsider the following mask policies:

  • Cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships, at their discretion, may advise passengers and crew that—if they are fully vaccinated or up to date with their COVID-19 vaccines—they may gather or conduct activities outdoors, including engaging in extended meal service or beverage consumption, without wearing a mask.
  • Cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships, at their discretion, may advise crew who are fully vaccinated or up to date with their COVID-19 vaccines that they do not have to wear a mask in areas of the ship that are inaccessible to passengers.
  • Cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships, at their discretion, may designate areas as only accessible to passengers and crew who are fully vaccinated or up to date with their COVID-19 vaccines where masks are not required (e.g., casinos; bars; spas; entertainment venues; and dining areas, including self-serve buffets).

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:


[10] A cruise ship may be required to implement mask use by all passengers and crew when indoors and in crowded outdoor areas if CDC has advised the cruise line that a ship is likely to be assigned “Red” status.

Physical Distancing

Strict adherence to passenger and crew testing protocols will aid in identifying potential cases of COVID-19 on board a cruise ship; however, continued prevention efforts are necessary to reduce the possibility of transmission to others if a case occurs on board the ship.

Due to the increased transmissibility of some SARS-CoV-2 variants of concern, until further notice [11] cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships are advised to reconsider the following physical distancing policy. 

  • Cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships, at their discretion, may designate areas only accessible to passengers and crew who are fully vaccinated or up to date with their COVID-19 vaccines, where physical distancing is not required (e.g., casinos; bars; spas; entertainment venues; and dining areas, including self-serve buffets).

Until further notice [11], for ships operated by cruise ship operators that have chosen to opt into CDC’s COVID-19 Program for Cruise Ships with a Vaccination Standard of Excellence classification or classification as a Highly Vaccinated ship, the following requirements are recommendations only.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators must:

  • Implement physical distancing protocols to provide at least 6 feet (2 meters) between individuals who are not traveling companions or part of the same family, and crowd reduction measures in all congregate and high traffic areas of the vessel.
    • Dining (also see Food Services section below)
      • Change restaurant and bar layouts to ensure that all parties remain at least 6 feet (2 meters) apart (e.g., removing tables/stools/chairs, marking tables/stools/chairs that are not for use)
    • Elevators and Stairwells
      • Limit capacity, provide floor markings, and provide marked queuing areas to eliminate congregation
      • Use floor markings in elevator lobbies and near the entrance to escalators to reinforce physical distancing of at least 6 feet (2 meters). Place decals inside the elevator to identify where passengers should stand, if needed.
      • Post signs reminding occupants to minimize surface touching. They should use an object (such as a pen cap) or their knuckle to push elevator buttons.
    • Entertainment Venues and Activities
      • Limit capacity in areas with performances, dancing, acting, and singing, and similar activities.
      • Provide physical distancing between seating areas, such as by blocking out seats to allow individuals to remain at least 6 feet (2 meters) apart.
      • Limit capacity in areas with activities such as rock-climbing walls, zip-lines, mini golf, sports courts, jogging, skating, arcade rooms, and similar activities.
    • Casinos
      • Block out seats and gaming equipment to allow individuals to remain at least 6 feet (2 meters) apart
      • Limit customers’ sharing of objects (e.g., items used in table games, dice) when possible, and clean and disinfect these objects between uses as much as possible
      • Set up physical barriers where it is difficult for individuals to remain at least 6 feet (2 meters) apart
    • Gyms
      • Provide physical distancing of at least 6 feet (2 meters) between equipment, such as by blocking out or removing equipment
    • Public Toilet Rooms
      • Ensure handwashing facilities are well-stocked with soap and a method to dry hands, such as paper towels or air dryers, in accordance with the 2018 VSP Operations Manual.
      • Ensure that people standing in line can maintain a 6-foot (2-meter) distance from one another. Post signs or markers to help attendees maintain the appropriate physical distance of at least 6 feet (2 meters).
      • Clean public toilet rooms regularly using products from the EPA List N: Disinfectants for Coronavirus (COVID-19)external icon, at least twice per day (e.g., in the morning and evening or after times of heavy use).
      • Provide information on how to wash hands properly. Hang signs pdf icon[PDF – 1 page] in toilet rooms.
    • Gangways
      • Provide physical guides, such as floor markings and signage, to instruct passengers to maintain a 6-foot (2-meter) distance from one another
    • Recreational Water Facilities (RWFs)
      • Reduce the bather load for each facility to meet physical distancing. When physical distancing of at least 6 feet (2 meters) between bathers is not possible, such as in small whirlpool spas, RWFs should be used by the same family or traveling companions only. This can be accomplished by close monitoring. Exceptions to physical distancing are permitted when necessary to:
        • Rescue a distressed swimmer, perform cardiopulmonary resuscitation (CPR), or provide first aid; or
        • Evacuate the water or pool deck due to an emergency.
      • Place seating area items located in or around RWFs, such as tables, chairs, loungers, sun beds, and poufs, 6 feet (2 meters) apart from each other to adhere to physical distancing. These items can be grouped together for families and traveling companions.
      • Follow the physical distancing protocols of 6 feet (2 meters) for lines to use slides and other interactive RWF areas.
    • Access Points (such as dining room entrances, guest services, disembarkation points)
      • Ensure that crew and passengers maintain 6 feet (2 meters) of physical distance while waiting for access.
    • Signs and Messages
      • Post signs, in highly visible locations (such as at entrances and in toilet rooms), to promote steps that prevent the spread of the virus (such as practicing physical distancing of at least 6 feet (2 meters), and properly wearing a cloth mask).

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships as best practices should:

  • Consider the use of wearable proximity alerting technology, e.g., proximity bands, to alert the wearer of physical distancing infractions to assist with maintaining physical distancing protocols.
  • Implement additional physical distancing protocols to provide at least 6 feet (2 meters) between individuals who are not traveling companions or part of the same family, and crowd reduction measures.
    • Elevators and Stairwells
      • Encourage occupants to take stairs when possible, especially when elevator lobbies are crowded or when only going a few flights.
      • Where feasible, designate certain stairwells or sides of stairwells as “up” and “down” to better promote physical distancing of at least 6 feet (2 meters).
      • Use stanchions (for lobbies only; not inside elevators) or other ways to mark pathways to help people travel in one direction and stay 6 feet (2 meters)
      • Consider limiting the number of people in an elevator.
      • Encourage escalator and elevator passengers to wash their hands and avoid touching their face after holding on to handrails or touching buttons.
      • Consider adding supplemental air ventilation or local air treatment devices in frequently used elevator cars.
    • Entertainment Venues and Activities, Gyms, and Spas
    • Public Hand Washing Facilities
      • Make sure waste receptacles are emptied regularly.
    • Public Toilet Rooms
      • Add physical barriers, such as plastic flexible screens, between toilet room sinks, stalls, and urinals, especially when they cannot be at least 6 feet (2 meters) apart.
    • Muster Drills
      • Conducted virtually or in a staggered manner to allow physical distancing of at least 6 feet (2 meters) between individuals who are not traveling companions or part of the same family.
    • Signs and Messages

[11] This guidance will be reevaluated based on public health conditions no later than March 18, 2022 and updated as needed.

HVAC Systems

When indoors, ventilation mitigation strategies can help reduce viral particle concentration. The lower the concentration, the less likely viral particles can be inhaled into the lungs (potentially lowering the inhaled dose); contact eyes, nose, and mouth; or fall out of the air to accumulate on surfaces. Protective ventilation practices and interventions can reduce the airborne concentrations and reduce the overall viral dose to occupants.

Heating, Ventilation, and Air Conditioning (HVAC) preventive measures should be implemented to minimize the possibility of dispersing the COVID-19 virus through the air. A layered approach should be applied by using more than one preventive measure.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must

  • Ensure ventilation systems operate properly for the occupancy level for each space.
    • Make sure air filters are properly sized and within their recommended service life.
    • Inspect filter housing and racks to ensure appropriate filter fit and minimize air that flows around, instead of through, the filter.
  • Ensure toilet room exhaust fans are functional and operating at full capacity.
  • Ensure sufficient negative air pressure in medical centers. Cruise ship negative pressure zones meet the intent of the HVAC system requirements.
  • Ensure predetermined isolation and quarantine cabins are in separate areas from other cabins.
    • If a traveler identified as a case or a close contact is disembarking the ship within 36 hours, the cruise ship operator may allow the traveler to stay in the original cabin if the traveler will be the only person in that cabin.

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators as best practices should:

  • Consider closing exclusively indoor RWFs, due to ventilation concerns.
  • Increase the introduction of outdoor air:
    • Open outdoor air dampers beyond minimum settings to reduce or eliminate HVAC air recirculation.
    • Open windows and doors, when weather conditions allow, to increase outdoor air flow. Do not open windows and doors if doing so poses a safety or health risk.
  • Use fans to increase the effectiveness of open windows:
    • Avoid placing fans in a way that could potentially cause contaminated air to flow directly from one person to another.
  • Rebalance or adjust HVAC systems to increase total airflow to occupied spaces when possible.
  • Turn off any demand-controlled ventilation (DCV) controls that reduce air supply based on occupancy or temperature during occupied hours.
  • Improve central air filtration:
    • Increase air filtrationexternal icon to as high as possible without significantly reducing design airflow. Increased filtration efficiency is especially helpful when enhanced outdoor air delivery options are limited.
      • Filters with a higher number of Minimum Efficiency Reporting Value (MERV) have higher efficiency and ability to capture particles from the air. High-Efficiency Particulate Air (HEPA) filters can achieve at least 99.97% removal of viral particles in the air.
  • Consider portable high-efficiency particulate air (HEPA) fan/filtration systems to enhance air cleaning (especially in higher risk areas such as the medical center or areas frequently inhabited by people with a higher likelihood of having COVID-19 and/or an increased risk of getting COVID-19).
  • Consider using ultraviolet germicidal irradiation (UVGI) as a supplemental treatment to inactivate SARS-CoV-2, especially if options for increasing room ventilation and filtration are limited. Upper-room UVGI systems pdf icon[PDF – 87 pages] can be used to provide air cleaning within occupied spaces, and in-duct UVGI systems can help enhance air cleaning of recirculated air inside central ventilation systems.

Food Services

Passenger interactive experiences include, but are not limited, to interactive cooking, culinary workshops and demonstrations, mixology/blending classes, and galley and other “behind the scene” tours.

Until further notice [12], for ships operated by cruise ship operators that have chosen to opt into CDC’s COVID-19 Program for Cruise Ships with a Vaccination Standard of Excellence classification or classification as a Highly Vaccinated Ship, the following requirements related to physical distancing are recommendations only.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

  • Change restaurant and bar layouts to ensure that all customer parties remain at least 6 feet (2 meters) apart (such as removing tables, stools, and chairs or marking any that are not for use).
  • Limit seating capacity to allow for physical distancing of at least 6 feet (2 meters).
  • Discourage crowded waiting areas by using phone app, text technology, or signs to alert patrons when their table is ready. Avoid using “buzzers” or other shared objects.
    • Food and beverage stations may be operated as self-service at the cruise ship operator’s discretion subject to the following conditions:
      • Use physical guides such as stanchions to direct flow and prevent crowding around beverage station machines and counters.
      • Promote physical distancing by:
        • Prohibiting passengers from pouring and mixing beverage condiments (e.g., sugar, cream) at beverage stations.
        • Providing signage to remind passengers of physical distancing requirements.
        • Providing appropriate number of staff to monitor physical distancing at each station, especially on embarkation day and during peak times as passengers learn the set up.
      • Provide hand sanitizer (containing at least 60% alcohol) at the entrances to food and beverage stations.
  • Provide eating utensils in a way that prevents handling by more than one person.
  • Install physical barriers, such as sneeze guards and partitions in areas where it is difficult for individuals to maintain proper physical distance of at least 6 feet (2 meters), such as serving stations and food pick up areas.
  • Provide physical guides, such as tape on decks and signage, to remind individuals to maintain physical distance of at least 6 feet (2 meters) where food and beverages are served.
  • Provide and encourage outdoor dining and bar/beverage service options.
  • Provide and encourage in-room passenger dining service.
  • Limit any sharing of food, tools, equipment, or supplies by food workers, to the extent practicable.
  • Ensure adequate supplies to minimize sharing of high-touch materials (e.g., serving spoons) to the extent practicable; otherwise, limit use of supplies and equipment by one group of food workers at a time and clean and disinfect between use.
  • Avoid using or sharing of items that are reusable, such as menus, condiments, and any other food containers. Instead, use disposable menus, digital menus that can be disinfected between each use, online menus that can be retrieved on diners’ personal cell phones, single serving condiments, and no-touch trash cans and doors.

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators as best practices should:

  • Consider options for consumers to order ahead of time to limit the amount of time spent in the restaurant.
  • Provide alternative meal services options, such as prepackaged grab-and-go meals, for consumption on open decks or in individual cabins to minimize risks associated with congregate indoor dining.
  • Use touchless payment options as much as possible, if available. If pens are needed for some purposes, disinfect between uses and/or encourage customers to use their own pens.

[12] This guidance will be reevaluated based on public health conditions no later than March 18, 2022 and updated as needed.

Cleaning and Disinfection

Numerous researchers have studied how long SARS-CoV-2 can survive on a variety of porous and non-porous surfaces. On porous surfaces, studies report inability to detect viable virus within minutes to hours; on non-porous surfaces, viable virus can be detected for days to weeks.

Cleaning of visibly dirty surfaces followed by disinfection helps prevent COVID-19 transmission. Cleaning with products containing soap or detergent reduces germs on surfaces by removing contaminants and may also weaken or damage some of the virus particles, which decreases risk of infection from surfaces. Disinfecting (using EPA’s List Nexternal icon) kills any remaining germs on surfaces, which further reduces any risk of spreading infection.

Additional information on cleaning and disinfecting on cruise ships can be found on CDC’s Interim Guidance for Ships on Managing Suspected Coronavirus Disease 2019 and Technical Instructions for CDC’s COVID-19 Program for Cruise Ships Operating in U.S. Waters.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

Shore Excursions & Transportation Services

Participating in shore excursions and group transportation increases a person’s risk of getting and spreading COVID-19 by bringing people in close contact with others, often for prolonged periods. Additionally, participating in these activities in other communities and countries with high prevalence of COVID-19 further increases the risk of introduction of COVID-19 onto cruise ships.

Fully Vaccinated Travelers

  • Cruise ship operators, at their discretion, may advise passengers and crew that—if they are fully vaccinated or up to date with their COVID-19 vaccines—they may engage in self-guided or independent exploration during port stops or shore leave. The cruise ship operator is additionally advised that foreign or local jurisdictions may have their own requirements.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

  • For travelers who are not fully vaccinated, ensure all shore excursion tour companies facilitate physical distancing to allow for at least 6 feet (2 meters) between individuals who are not traveling companions or part of the same family; and adhere to mask wearing while indoors, cleaning and disinfection, and other COVID-19 public health measures throughout the tour.
    • This is a recommendation for Highly Vaccinated and Vaccination Standard of Excellence ships.
  • For travelers who are not fully vaccinated, restrict passenger and crew attendance so that proper physical distancing of at least 6 feet (2 meters) between individuals who are not traveling companions or part of the same family.
    • This is a recommendation for Highly Vaccinated and Vaccination Standard of Excellence ships.
  • Cruise ship operators must have a protocol for managing persons with COVID-19 and close contacts who are not fully vaccinated and did not recover from COVID-19 in the previous 90 days at all foreign ports of call. At a minimum, the protocol must include the following:
    • Disembarkation and housing of persons with suspected or confirmed COVID-19 needing shore-based hospital care and their travel companion(s) for the duration of their isolation or quarantine period. If repatriation via private or medical transport is required, please refer to the following webpage: Guidance for Transporting or Arranging Transportation by Air of People with COVID-19 or COVID-19 Exposure.
    • Commercial repatriation of U.S.-based persons with COVID-19 and close contacts only after meeting criteria to end isolation and quarantine per CDC guidance. For commercial repatriation of foreign-based persons with COVID-19 close contacts, cruise ship operators must consult with all relevant public health authorities.

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators as a best practice should:

  • Consider prohibiting self-guided or independent exploration during port stops by passengers and crew who are not fully vaccinated.
  • Consider offering supervised shore excursions during port stops for passengers and crew who are not fully vaccinated where all participants wear a mask and maintain physical distance. The cruise ship operator is additionally advised that foreign jurisdictions may have their own requirements.
  • Limit shore excursions in foreign ports of call to countries listed as Level 1: COVID-19 Low in CDC’s COVID-19 Travel Recommendations by Destination.

Embarkation/Disembarkation Procedures

Embarkation and disembarkation places large numbers of people in close proximity—including passengers, crew, and port personnel—in indoor and sometimes small, enclosed spaces (e.g., gangways, corridors, waiting areas). This close proximity can increase the risk of introduction and transmission of COVID-19 onto cruise ships and into communities.

Requirements

To reduce the spread of SARS-CoV-2, cruise ship operators choosing to opt into CDC’s COVID-19 Program for Cruise Ships must:

  • Ensure embarkation and disembarkation procedures follow the processes outlined in their port agreements.
  • Ensure there is a private screening area for people identified as needing additional medical screening during the embarkation and check-in process.

Recommendations for All Cruise Ships

To further reduce the spread of SARS-CoV-2, cruise ship operators as best practices should:

  • Stagger or schedule embarkation/disembarkation times.
  • Provide touchless check-in/check-out processes.
  • Install signage and floor marking reminders and predetermined and spatially identified queue areas inside port terminals and onboard ships for passengers who are embarking and disembarking.
  • Ensure written notifications about COVID-19 prevention and control are presented before passengers reach the check-in point to give them enough time to review before check-in.
  • Use touchless garbage cans or pails and cashless payment options when possible. Otherwise, exchange cash or card by placing payment in a receipt tray, if available, or on the counter.
  • Make hand sanitizer (containing at least 60% alcohol) available to passengers, crew, and port personnel in these areas.
Summary of Past Changes

March 18, 2022

  • Removed requirement for cruise ship operators to suspend passenger interactive experiences previously approved by the Vessel Sanitation Program.
  • Changed physical distancing during shore excursions and transportation to a recommendation for Highly Vaccinated and Vaccination Standard of Excellence ships.
  • Updated quarantine cabin guidance for close contacts identified within 36 hours before disembarking.

February 17, 2022

  • Provided guidance for cruise ship operators on how to calculate the dates of eligibility for COVID-19 vaccine booster doses and “up to date” status.
  • Clarified guidance for passengers with documentation of recovery from COVID-19.
  • Updated guidance for pre-embarkation screening of passengers and provided flexibility for pre-embarkation screening testing for travelers who are up to date with their COVID-19 vaccines.
  • Clarified masking guidance for Highly Vaccinated ships.

February 9, 2022

Updated language for new COVID-19 Program for Cruise Ships Operating in U.S. Waters. As of January 15, 2022, the Temporary Extension & Modification of Framework for Conditional Sailing Order (CSO) has expired and is no longer in effect.


November 1, 2021

Updated language to clarify the minor modifications of the Temporary Extension & Modification of Framework for Conditional Sailing Order (CSO).


August 27, 2021

Added language advising cruise ship operators to voluntarily reconsider the following mask policies: allowing fully vaccinated crew to remove masks indoors in areas inaccessible to passengers; designating areas as only accessible to fully vaccinated passengers and crew where masks and physical distancing are not required; advising passengers and crew on ships with 95% of crew and 95% of passengers who are fully vaccinated that they do not have to wear a mask or maintain physical distance in any areas. This change was based on the CDC’s guidance for fully vaccinated people and the increased transmissibility of some SARS-CoV-2 variants of concern,

Revised screening testing and documentation requirements for fully vaccinated passengers and those who are not fully vaccinated, for pre-embarkation, embarkation, and back-to-back sailing, for cruise ships operating under the CSO, including those choosing to follow CSO measures on a voluntary basis. This change was due to the increased transmissibility of some COVID-19 variants of concern, and evidence of breakthrough cases in fully vaccinated individuals,

Added language reflecting that, as of July 23, 2021, the CSO and accompanying measures, such as technical instructions, are nonbinding recommendations for cruise ships arriving in, located within, or departing from a port in Florida. However, CDC will continue to operate the CSO as a voluntary program for such ships should they choose to follow the CSO measures on a voluntary basis.


July 13, 2021

Added language that cruise ship operators must have a protocol for managing persons with COVID-19 and close contacts who are not fully vaccinated at all foreign ports of call.

Updated information for tests that do not have the U.S. Food and Drug Administration (FDA) reference panel available and provided additional requirements for use of self-tests.


May 26, 2021

Provided cruise ship operators with more discretion regarding fully vaccinated travelers. Provided additional discretionary considerations for ships with at least 95% of crew and 95% of passengers fully vaccinated.


May 18, 2021

Clarified disembarkation testing is only for cruises more than 4 nights.


May 14, 2021

Added sections for Screening of Embarking Passengers for Restricted Voyages, Testing of Embarking and Disembarking Passengers for Restricted Voyages, Test Selection and Specifications for Passenger Screening Testing on Restricted Voyages, and Onboard COVID-19 Testing for Symptomatic Passengers and their Close Contacts.