An item which consists of a caisson containing a swivelling fin guided in its rotative motion by two bearings. the fin has a rear hinged or pivoted section and different functioning systems such as an incidence system, a locking system and a collapsible system. it is mounted on a ship hull to improve its stability when it is at sea.
NSN 6135-01-354-5535
NSN 5950-01-113-7834
NSN 6110-01-037-2163
NSN 5965-00-791-0964
NSN 2925-00-717-7904
NSN 5965-01-119-0243
NSN 5855-00-869-3635
NSN 5855-00-494-9581
NSN 5999-00-185-6032
NSN 6105-01-025-5981
NSN 5915-00-233-6346
NSN 6645-01-471-2103