The most versatile member of the Coast Guard's operational team is the boatswain's mate (BM). Boatswain's mates are masters of seamanship. BMs are capable of performing almost any task in connection with deck maintenance, small boat operations, navigation, and supervising all personnel assigned to a ship's deck force. BMs have a general knowledge of ropes and cables, including different uses, stresses, strains, and proper stowing. BMs operate hoists, cranes, and winches to load cargo or set gangplanks, and stand watch for security, navigation or communications.