(6) _The compass._ Types of compasses, installation and care, boxing the compass, points and degrees, variation and deviation, compensating the compass.
(7) _General._ General seaman duties and seaman watches.
=e. Visual signal instruction.= The visual signal training should include:
(7) Signaling Navy and Coast Guard vessels.
=f. Degaussing school.= At the Navy degaussing school, complete degaussing of a ship is taught, including what equipment is required and how it is used.
=g. Wartime radio procedure.= The wartime radio procedure is that procedure practiced by the Navy. It includes:
(1) Ship-to-ship, ship-to-shore, and ship-to-plane radio instruction.
(5) Operation and maintenance of marine radio equipment.
[Illustration: _Figure 45. Outboard profile showing cathead and cargo booms._]
[Illustration: _Figure 46. Forty-ton cathead mounted on bow of ship._]
=h. Gyrocompass instruction.= The Navy gyrocompass school teaches:
(1) Basic principles of the action and operation of the gyrocompass.
(2) Cause of gyrocompass errors and how to correct or compensate them.
(3) Maintenance and care of the compass and its equipment.
=i. Convoy communication.= The Navy convoy communication school teaches the various types of signaling used between ships in a convoy. The instruction includes:
=j. Machine-shop training.= The machine-shop training includes the operation of drill presses, grinders, lathes, cutters, punch and shear machines, shapers, forging hammers, and milling machines. The men work with different types of metals, receive practical experience in various kinds of machine-shop jobs, and learn how to maintain the equipment and tools.
=k. Demolition training.= Training in explosives and demolitions includes the following:
(5) Cutting, cratering, and flattening charges.
13. SHIPBOARD TRAINING. Training aboard ship involves molding the crew into an efficient, smooth-running organization. This requires constant drill, practice, and working out of operational team problems.
[Illustration: _Figure 47. Single-speed winch for operating 10-ton cargo boom._]
[Illustration: _Figure 48. Fifty-ton barge made up of 21 sections and propelled by 115-hp outboard engine._]
=a. General.= Enemy destruction of a port’s facilities generally may be divided into two classifications.