When acting as escorting vessel, keep on exposed bow of convoy and about 1200 yards ahead of her. Insist that all vessels zigzag day and night. Escorting vessels to break joints when courses are changed. Leave patrol and return to Base in time to arrive at or about scheduled time.
A WET DAY FOR THE DECK WATCH
FRENCH AND UNDERHILL ARE DOLLED UP FOR THE CAMERA
Calls for assistance from vessels will be answered and in case of disaster crews are to be rescued if possible. Report rescue of survivors by radio in order to receive instructions.
Ordinary cruising speed of the faster vessels should be at least twelve knots. Fires should be kept under all boilers. The slower vessels should maintain a speed of nine knots or over.
Ships returning from patrol will signal, using numerals, the amount of coal and water needed. Coaling may commence upon arrival in port or be done the day after arrival.
When it was desired to have the Corsair find and escort some particular ship or assemblage of them through part of the danger zone, such instructions as the following were sent to her commander:
United States Patrol Squadron, Flag Office
Brest, France, 27 July, 1917