-
A vessel engaged in laying, servicing, or picking
up a navigational mark, submarine cable or pipeline;
-
A vessel engaged in dredging, surveying or underwater
operations;
-
A vessel engaged in replenishment or transferring
persons, provisions or cargo while underway;
-
A vessel engaged in the launching or recovery of
aircraft;
-
A vessel engaged in mine clearance operations;
-
A vessel engaged in a towing operation such as severely
restricts the towing vessel and her tow in their ability to deviate
from their course.