Boat Davits Parts

(Page 3) End item NSN parts page 3 of 6
Part Number
NSN
NIIN
10948082 Tapered Roller Bearing
000137743
10A6750 Tapered Roller Cone And Rollers
001000787
1112562 Compression Helical Spring
008914881
111490 Annular Ball Bearing
002750117
1131172 Bearing Retaining Plate
012067792
1131312 Linear-rotary Motion Roller
012067760
1136642 Sleeve Bearing
002463940
1136652 Bushing
002295574
1174222 Gasket
010045045
1175622 Sleeve Spacer
011996189
11TA253 Annular Ball Bearing
005555429
120518 Annular Ball Bearing
002750117
1209B Cylindrical Roller Bearing
001170695
1209B-HC Cylindrical Roller Bearing
001170695
1209TS Cylindrical Roller Bearing
001170695
1209TSHYATT Cylindrical Roller Bearing
001170695
1211MF Annular Ball Bearing
005555429
1211S Annular Ball Bearing
005555429
1213F Annular Ball Bearing
001556229
1215F ZZ Annular Ball Bearing
005543368
Page: 3

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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