Nothing that floats will be thrown overboard. All waste material that can be burned will be burned. Tin cans must be well punctured before being thrown overboard. Garbage that cannot be burned shall be accumulated in suitable receptacles and thrown overboard from all ships simultaneously one hour after sunset each night.
Submarine Attack
The following is generally accepted:
Submarines on surface are visible on the horizon. Submarine awash is visible about five miles. Submarine submerged, periscope showing, is not visible more than two miles unless periscope appears against skyline. Porpoising of submarine as it comes to the surface to obtain sight through periscope creates a distinct wake which is more clearly visible than the wake of periscope when submarine is steadied.
Under poor conditions of atmosphere and sea the probability of detecting a submarine decreases. It follows that constant vigilance alone will insure the early detection of a submarine. The wake of a torpedo is distinctive and can easily be picked up in smooth water at a distance of two thousand yards. In rough water it is difficult to observe the wake.
NUMBER TWO GUN CREW ON WATCH
THEY ARE ALL SEA DOGS TOGETHER
Daylight attack by surface craft (enemy raider), will be handled by signal from the Convoy Commander. Daylight attack by submarines shall be handled as follows by each vessel: