What does aai mean?

AAI-"full speed standard", normal cruising speed? AA2/3?

The captain of the submarine gave the order to ring the bell. At present, the bell order in Chinese and English and its meaning are as follows:

Stand by the engine and get ready to start.

Very slow ahead, very slow when berthing.

Move forward slowly, move forward slowly.

Half-forward, medium-speed forward

full speed ahead

Stop the engine

Back off slowly, back off very slowly

Back off. Back off slowly. Step back slowly.

Back up, two and a half backs up, and back up at medium speed.

Back off, three full speed back off, full speed back off.

Emergency forward, three emergency, full speed, just in case.

Emergency retreat 3. Emergency retreat at full speed. In an emergency, retreat is extremely fast.

After using the car, use up the engine.

By the way, the port and starboard in common steering commands are not left or right, but called

Port and starboard, so starboard rudder 10 is called starboard ten, and left full rudder is called hard port a.