MSIB: COVID-19 Safety Requirements in the Maritime Transportation System: Change-1

The Coast Guard has published Change 1 to Marine Safety Information Bulletin (MSIB) 02-21 to provide updated guidance on the requirement for wearing masks on commercial vessels in Executive Order (13998) issued by the President on January 21, 2021.
Source: USCG
Link: MSIB: COVID-19 Safety Requirements in the Maritime Transportation System: Change-1