Boat Davits Parts

(Page 4) End item NSN parts page 4 of 6
Part Number
NSN
NIIN
1228292 Needle Roller Bearing
012699191
12364297 Tapered Roller Bearing Cup
001437586
12364297 Tapered Roller Cone And Rollers
002770105
124275 Ball Bearing Unit
007919853
12585 Valve Seat
010917847
12588-1 Valve Piston
012578568
127418Z Tapered Roller Bearing Cup
001437586
127908 Cylindrical Roller Bearing
001170695
12Z369-14 Annular Ball Bearing
001556229
1315 Annular Ball Bearing
005555535
1315M Annular Ball Bearing
005555535
1330413 Electrical Contact Brush
001996123
13626 Needle Roller Bearing
000569377
13813P11 Cylindrical Roller Bearing
001007336
14129 Tapered Roller Cone And Rollers
001000787
145C51 Tapered Roller Bearing Cup
001000593
14821 Cylindrical Roller Bearing
001170695
149370Z Tapered Roller Bearing Cup
001000593
15-00-044-006 Plain Encased Seal
010324271
154106028 Electrical Plug Connector Body
010469272
Page: 4

Boat Davits

Picture of Boat Davits

A davit is any of various cranelike devices used on a ship for supporting, raising, and lowering boats, anchors, etc.

Davit systems are most often used to lower an emergency lifeboat to the embarkation level to be boarded. Davits can also be used as man-overboard safety devices to retrieve personnel from the water.

The lifeboat davit has falls (now made of wire, historically of manila rope) that are used to lower the lifeboat into the water. Davits can also refer to single mechanical arms with a winch for lowering and raising spare parts onto a vessel and for lowering any other equipment from the deck of a vessel or a pontoon to the water. The maintaining and operation of davits is all under jurisdiction of International Maritime Organization. The regulations are enforced by the country's own Coast Guard.

The development of the davit from its original "goose neck form" to the current devices advanced greatly when A.P. Schat patented a number of systems in 1926 that allowed the lifeboat to glide over obstructions on a ship's hull, known as the "Schat Skate". This was followed by a self-braking winch system that allowed the lifeboat to be lowered evenly. The standard became so common that shipyard specifications call for Schat-type davits which are available from various sources. Similar systems developed by Schat companies are used on offshore oil or gas rigs, being placed around the structure.

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