Wooden or metal devices with sheaves or blocks attached on the ends, projected over a vessels sides or stern, and used to hoist up a dinghy or small boat

A pair of cranes used for hoisting and lowering a ship's boats. The word came into use in the early 17th century and at that time was spelled "davids," possibly a reference to their unknown Inventor.

A pair of metal posts with tackle attached for suspending and lowering a lifeboat.

small cranes or apparatus for lifting, swinging out and lowering of ship's lifeboats.

Nautical term describing cranes used to lower and hold lifeboats.

two radial cranes on a ship which hold the lifeboats. They are constructed in such a way as to lower and lift the lifeboats the easiest way possible and are also unobstructed in case of an emergency.

Small cranes used to raise or lower small boats and light items from deck to water level.