The U.S. Coast Guard issued a Notice stating that, effective May 23, 2005, it will impose conditions on entry on vessels arriving from countries that have not instituted effective anti-terrorism measures.
The countries so determined are: Democratic Republic of the Congo, Guinea-Bissau, Liberia, Mauritania, and Nauru.
Vessels arriving in the United States that have called in one or more of these nations during their last five port calls must have:
(1) Implemented Security Level 2 in the ship security plan;
(2) Placed guards at each access point while in port in those nations;
(3) Executed or attempted to execute a Declaration of Security:
(4) Logged all security actions;
(5) Report actions taken in the U.S. advance notice of arrival; and
(6) Ensure each access point to the vessel is guarded by armed, private security guards acceptable to the USCG while the vessel is in the U.S. port.
Source of information:
US Coast Guard