http://www.subvetpaul.com/Diedwwii.htm
USN RATES and RANKS
DESCRIPTIONS IN USE DURING WWI IN THE SUBMARINE SERVICE
Rating Abbreviation
Officer Ranks
Ensign ENS
Lieutenant (Junior Grade) LT(jg)
Lieutenant LT
Lieutenant Commander LCDR
Commander (Commodore) CDR
Rear Admiral RADM
Vice Admiral VADM
Admiral ADM
Enlisted Mens' Ratings
Rating Abbreviation Duties
Baker Bkr
Operate ovens. Do any kind of baking.
Boatswain's Mate BM
Work with canvas and hoisting with block and tackle. Handle rope, wire, and anchor chain. Handle power and sail boats. Steer ship and chart courses. Direct salvage.
Commissary Steward CS
Supervise ship's galley.
Cook Ck
Take charge of galley.
Coxswain COX
Work with canvas and handle boats. Know signaling.
Electrician's Mate EM
Use electrical tools and repair electrical equipment. Charge storage batteries. Wind armatures. Stand watch on main gyrocompass and in main control room of electrically driven ships. Repair telephone circuits. Apply first aid in case of electrical shock.
Fire Controlman FC
Stow, inspect and repair fire control instruments. Take charge of fire control equipment. Know electricity - A.C. and D.C. Man fire control stations.
Fire Controlman S FCS
Submarine fire controlman.
Fireman F
Operate, adjust and repair pumps.
Gunner's Mate GM
Take charge of gun and crew. Assemble and fire all types of guns. Handle ammunition. Handle mines and depth charges.
Machinist MACH or Machinist's Mate MM
Operate main and auxiliary engines. Adjust, repair, and overhaul engines. Be familiar with ship's drainage systems, distilling plants, evaporators and pumps.
Mess Attendant MATT
Motor Machinist's Mate MoMM
Operate machine tools. Operate and maintain internal combustion engines and engine auxiliaries. Knowledge of pressure and air systems. Be familiar with electrical apparatus.
Officer's Cook OC
Pharmacist's Mate PhM
Take charge of sick bay. Do minor surgery and administer simple medicines.
Quartermaster QM
Steer ship and take soundings. Use range finder. Plot bearings. Know signal control and navigation. Send and receive International Code by blinker, searchlight and semaphore.
Radarman RdM
Stand radar watch and operate radar equipment.
Radio Electrician RE
Radio Technician RT
Maintain radio equipment.
Radioman RM
Transmit and receive radio messages. Encipher and decipher messages.
Seaman S
Know naval drill duties, knots, steering and signaling. Stand watch and gunnery duties.
Ship's Cook SC
Supervise and prepare cooking.
Signalman SM
Stand signal watch on bridge. Identify flags. Use blinker, searchlight and semaphore. Use range finder, searchlights, signal apparatus.
Steward St
Take charge of mess arrangements.
Steward's Mate StM Serve at table in officers' mess.
Storekeeper SK
Take charge of ship's storeroom. Issue and account for stock and clothing.
Torpedoman's Mate TM
Lubricate, assemble, charge and fire torpedoes. Lay mines and drop depth charges.
Warrant Officer WO
Yeoman
Take charge of ship's office. Take dictation, write Navy letters. Prepare reports and keep personnel records.
And some details for "Battle Stations Torpedo"
Includes:
1.) The Fire Control Party
2.)The ship handling and maneuvering party
3.)The torpedo handling party
1.)The Fire Control Party:
-Approach Officer: CO, periscope / bridge / conning tower
-Attack and Sonar Coordinator: XO, conning tower
-TDC Operator: officer, conning tower (position keeper)
-Assistant TDC Operator: officer, conning tower (angle solver)
-Navigational Plotter: officer, conning tower (DRT)
-Periscope Assistant: enlisted (Quartermaster)
-Sonar Plotter: officer, control room
-Sonar Plot Recorder: enlisted, control room
-Sonar Operators: enlisted, sonar stations
-ST Radar Operator: enlisted, conning tower (ST console)
-Firing Key Operator: enlisted (Fire Controlman), conning tower (firing panel)
-Gyro Angle Setters: enlisted, torpedo room(S)
-SS Radar Operator: enlisted, conning tower (SS console)
Then there's the ship handling + the torpedo handling parties, but I have no time for more atm...