Supervising and perform routine shipboard maintenance as required.
Launching and recover submersibles.
Carrying out captain's orders.
Working with chefs, stewards, engineers, and deckhands.
Acting as second in command if captain is incapacitated.
Planing the day's work and activities.
Solving problems that come up.
Maintaining deck log.
Running safety drills.
Training, direct, and supervise personnel in ship's maintenance duties in all activities relating to marlinspike, deck, boat seamanship, painting, upkeep of ship's external structure, rigging, deck equipment, and boats.
Acting as petty officer-in-charge of picket boats, self-propelled barges, tugs, and other yard and district craft.