The derrick is another lifting device used on stations that do not have a rock in the sea for a highline and where seas were also relatively calm. It was used like the highline to lift and lower items to and from the work boats or lower the keeper’s boat or station boat in and out of the water.
Definition – “a derrick is a lifting device composed of one mast or pole which is hinged freely at the bottom. It is controlled by (usually 4) lines powered by some such means as man-hauling or motors, so that the pole can move in all 4 directions. a line runs up it and over its top with a hook on the end, like with a crane. It was commonly used in docks.”Derrick (Lifting Device), 28 april 2006 12:06 UTC, Wikipedia, The Free Encyclopedia Continue reading