ORDERS FROM DIVING OFFICER TO CONTROL ROOM

To hydraulic manifold:

Open all main vents. Vent negative. Cycle the vents. Flood safety. Flood negative. Shut the negative flood.

To trim manifold:

Pump from forward trim to after trim.
(Air manifold reports: Suction on forward trim; after trim venting)
Pump from auxiliary to sea. Flood auxiliary from sea.
Pump from auxiliary to after trim, fi-yiv hundred pounds.
Pump from forward trim to auxiliary and report every fi-yiv hundred pounds.
(Trim manifold reports ‘Fi-yiv hundred out. One thousand out’ etc)

To air manifold:

Bleed air.
Blow all main ballast tanks. Blow negative.
Secure the air.

To planesmen:

Niner ze-ro feet. Six fi-yiv feet.
Two degrees up bubble. Thuh-ree degrees down bubble.
Ease the bubble. Ze-ro bubble.
Twenty degrees rise on the bow planes. Ten degrees dive on the stern planes.
Take charge of your planes.

ORDERS FROM DIVING OFFICER OVER XJA

Forward room, shift bow buoyancy vent to hand.
Forward room, open bow buoyancy vent by hand.
After room, shut number seven main ballast vent by hand.
Forward engine room, open number fi-yiv fuel ballast flood valves by hand.

More Phraseology

Battle Stations: Gun Action
Torpedo: Battle Stations
Torpedo: Gyro Regulators
Torpedo: Talkers and Emergency Firing
Cruising Submerged
Cruising Surfaced
Diving (I)
Diving (II)
Emergency Messages
Engine and Battery Combinations
Getting Underway
Posting Lookouts
Reports by Lookouts
Radar