Description:

Rigging end item identification, any acceptable design type, not rated maximum load rating, any acceptable material.

Properties:

An arm designed to be mounted aboard a vessel for moving or handling various loads. In use the pivot end is attached to a supporting structure, the other end rigged to a mast or other rigid structure in such a manner that the angle of the arm may be adjusted, as required, to the horizontal. Rigging fittings and tackle may be furnished. Excludes boom, sail; and boom, pontoon barge.