| L.R. |
Left Rudder |
| L.W.D.C. |
Light Weight Deck Coverings |
| LAD. |
Ladder |
| LAV. |
Lavatory Or Laboratory |
| LIEUT. |
Lieutenant |
| LKR. |
Locker |
| LOC. |
Located |
| LONG'L |
Longitudinal |
| LUB. |
Lubricating |
| LTG |
Lighting |
| Man. |
Manifold |
| M.B.T. |
Main Ballast Tank |
| M.E. |
Main Engine |
| M.G. |
Motor Generator |
| M.H. |
Manhole |
| M.J. |
Metal Joiner |
| M.J.D. |
Metal Joiner Door |
| M.J.L. |
Metal Joiner Louvre |
| M.J.S.P. |
Metal Joiner Solid Panel |
| M.M. |
Main Motor |
| M.S. |
Medium Steel |
| M.T. |
Flame-Tight |
| M/M |
Millimeter |
| MACH. |
Machine |
| MAG. |
Magazine |
| MIM. |
Mimeograph |
| MIN. |
Minimum |
| MK. |
Mark |
| MLD.B/L |
Molded Baseline |
| MLD.BL |
Molded Baseline |
| N.F.O. |
Normal Fuel Oil (tank) |
| N.T. |
Non-Tight |
| N.T.AL.AL. |
Non-Tight Aluminum Alloy |
| N.W.T. |
Non Water-Tight |
| NO. |
Number |
| O.A.O. |
Operated Above Only |
| O.T. |
Oil-Tight |
| OFF's |
Officer's |
| OP'R |
Operated |
| OPER. |
Operated |
| OPER' |
Operated |
| ORD. |
Ordnance |
| OUTL. |
Outlet |
| OVHD |
Overhead |
| P. |
Port |
| P. |
Press |
| P.&S. |
Port and Starboard |
| P.B.D. |
Plotting Board |
| P/B |
Push Button |
| P.O.T. |
Portable Operating Table |
| P.P. |
Power Panel |
| P.P. |
Pressure Proof |
| P.R. |
Power Panel |
| P.S. |
Passing Scuttle |
| P.SC. |
Passing Scuttle |
| P/S |
Port & Starboard |
| PASS. |
Passage |
| PHO. |
Phonograph |
| PL. |
Plate |
| PLAT. |
Platform |
| PLATF. |
Platform |
| PLATF'M |
Platform |
| PLTG. |
Plating |
| PORT. |
Portable |
| PORT.PLT. |
Portable Plate (hatch) |
| POW.SUP. |
Power Supply |
| POWDR. |
Powder |
| PROJ. |
Projectile |
| PWD'R |
Powder |
| PWDER. |
Powder |
| Pwr. |
Power |
| Q.A. |
Quick Acting |
| Q.A.E.S. |
Quick Acting Escape Scuttle |
| Q.A.S. |
Quick Acting Scuttle |
| R. |
Range |
| R.C.M. |
Radio Counter Measures |
| R.D.F. |
Radio Direction Finder |
| R.O. |
Radio Operator |
| R.S. |
Ready Service |
| R.V. |
Relief Valve |
| R.W.T. |
Raised Water-Tight |
| R.W.T.H. |
Raised Water Tight Hatch |
| R.W.T.M.H. |
Raised Water-Tight Manhole |
| RAD. |
RADAR |
| RAD. |
Radius |
| READY S. MAG. |
Ready-Service Magazine |
| REC. |
Receiver |
| REG.PUB.LKR. |
Registered Publication Locker |
| REG. |
Regulator |
| Replen. |
Replenishing |
| RES. |
Reserve |
| RM. |
Room |
| R.R. |
Right Rudder |
| RUD.IND. |
Telegraph Transmitter Rudder Indicator |
| S. |
Shower or Sink |
| S. |
Starboard |
| S. |
Stool |
| S.A. |
Salvage Air Connection |
| S.B. |
Secretary Bureau |
| S.B. |
Single Berth |
| S.D. |
Supply Department |
| S.L. |
Safe Locker |
| S.P.F.T. |
Single Pedestal Flat Top |
| S.P.T.W. |
Single Pedestal Typewriter |
| S.S. |
Slop Sink |
| S.T.C. |
Single Toilet Case |
| S.T.S. |
Special Treatment Steel |
| S.W. |
Salt Water |
| SAN. |
Sanitary |
| SEC. |
Security |
| SEC.CONN. |
| SH. |
Shower |
| SH. |
Shelf |
| SHR. |
Shower |
| SNKL. |
Snorkel |
| ST'L. |
Steel |
| STAN. |
Stanchion |
| STATION |
Secondary Conning Station |
| STB'D |
Starboard |
| STBD. |
Starboard |
| STL. |
Steel |
| STOW. |
Stowage |
| STRUCT. |
Structure |
| SUC. |
Suction |
| SW. |
Switch |
| SWBD. |
Switchboard |
| T. |
Table |
| T.B.T. |
Target Bearing Transmitter |
| T.L. |
Table Leaf |
| T.L.L. |
Table Leaf Locker |
| T.S. |
Transfer Switch |
| T.T. |
Torpedo Tube |
| TEL.IND. |
Engine Telegraph Indicator |
| TEL.TRANS. |
Engine Telegraph Transmitter |
| TERM. |
Terminal |
| TORP. |
Torpedo |
| TR. |
Transformer |
| TRANS. |
Transmitter |
| TRANSF. |
Transfer |
| TT. |
Turntable |
| TYP. |
Type |
| U. |
Urinal |
| U.H.F. |
Ultra High Frequency |
| UR. |
Urinal |
| V. |
Vent |
| V.B.T. |
Variable Ballast Tank |
| V.L. |
Vertical Ladder |
| V.L.F. |
Very Long Frequency |
| V.M.C. |
Ventilation Motor Control |
| V.T. |
Ventilation Trunk |
| V.T. |
Vertical Keel |
| VENT. |
Ventilation |
| W.C. |
Water Closet |
| W.L. |
Waterline |
| W.O. |
Warrant Officer |
| W.R. |
Wardrobe |
| W.R. |
Wash room |
| W.R.S.R. |
Ward Room State Room |
| W.R.T. |
Water Round Torpedo |
| W.R.W.C. |
Ward Room Water Closet |
| W.S. |
Watershed |
| W.T. |
Water-Tight |
| W.T. |
Wiring Trunk |
| W.T.P.S. |
Watertight Passing Scuttle |
| W.T.Q.A. |
Water-Tight Quick-Acting |
| W.T.Q.A.S. |
Water-Tight Quick-Acting Scuttle |
| W.U. |
Wire Unit |
| WELD. |
Welding |
| WR. |
Wardrobe |
| XMTR |
Transmitter |
