Davit

A davit (/ˈdeɪvɪt/)[1] is any of various crane-like devices used on a ship for supporting, raising, and lowering equipment such as boats and anchors.

[2] Davit systems are most often used to lower an emergency lifeboat to the embarkation level to be boarded.

[3] Davits can also be used as man-overboard safety devices to retrieve personnel from the water.

The maintaining and operation of davits is all under jurisdiction of the International Maritime Organization.

They began to be introduced into Royal Navy warships in the late 18th-century and originally took the form of squared baulks of timber.

Boat suspended from Welin Quadrant davits; the boat is mechanically 'swung out'
HMS Victory in the 19th century, showing her boats suspended from wooden davits
Gravity multi-pivot on cruiseferry Scandinavia
Gravity Roller Davit
Gravity multi-pivot davit holding rescue vessel on North Sea ferry
Freefall lifeboat on the Spring Aeolian
Frapping line
Labeled Tricing
Gripe
Steps to launch davit
Roller Gravity Davit