represented by two Navy ratings: Boatswains Mate
(BM) and Signalman (SM).
The insignia for Boatswains
Mate (BM) is represented by the crossed anchors.
Figure 2-3.Enlisted occupational fields and specialty marks of associated ratingsContinued.
BMs train, direct and supervise personnel in
military duties in all activities relating to marlinespike;
deck and boat seamanship; painting, maintenance, and
upkeep of the ships external structure; rigging; deck
equipment; and boats.
BMs take charge of working
parties; perform Seamanship tasks; and act as petty
officers in charge of picketboats, self-propelled barges,
tugs, and other yard and district craft. They also
maintain discipline as master-at-arms and police petty
officers; serve in, or take charge of, guncrews or damage
control parties; and operate and maintain equipment