The term "vessels restricted in their ability to manoeuvre" shall include but not be limited to:
- a vessel engaged in laying, servicing or picking up a navigation 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 mineclearance operations;
- a vessel engaged in a towing operation such
as severaly restricts the towing vessel and her tow in their ability
to deviate from their course.