Under the Marine Transportation Security Act, they must report 96 hours before they arrive at their port of destination. South of the 60th parallel, under ECAREG or WESTREG, they must report 24 hours before, as they enter and during the voyage, depending on where they are. North of the 60 th parallel, except for the 96-hour requirement, they have no obligation. NORDREG is a voluntary system.
On April 2nd, 2009. See this statement in context.