| IJN Vessels |
| Class |
Type |
| ACM |
Auxiliary Minelayer |
| ACO |
Collier with tanker capacity |
| AE |
Ammunition Transport Ship |
| AF |
Stores Ship |
| AFD |
Mobile Floating Crane |
| AG |
Miscellaneous Auxiliary |
| AGMR |
Communications Ship |
| AGP |
Patrol Craft Tender |
| AGS |
Surveying Ship |
| AGT |
Torpedo Recovery Vessel |
| AH |
Hospital Ship |
| AK |
Cargo Ship |
| AKF |
Refrigerated Cargo Ship |
| AM |
Minesweeper |
| AMA |
Auxiliary Minesweeper |
| AMc |
Coastal Minesweeper |
| AN |
Net-Laying Ship |
| AO |
Tanker (Oiler) |
| AOG |
Tanker (Gasoline) |
| AP |
Transport |
| APA |
Attack Transport |
| AR |
Repair Ship |
| ARC |
Cable Reparing or Laying Ship |
| AS |
Submarine Tender |
| AT |
Tug Boat |
| AV |
Seaplane Tender (converted merchantman) |
| AVB |
Advanced Aviation Base Ship |
| AVS |
Aviation Supply Ship |
| AVT |
Auxiliary Aircraft Transport |
| AW |
Distilling Ship / Water Tanker |
| BB |
Battleship |
| CA |
Large Cruiser |
| CD |
Coastal Defense Ship |
| CL |
Light Cruiser |
| CM |
Mine Layer |
| CMN |
Dual-purpose Mine and Net Layer |
| CMc |
Coastal Mine Layer |
| CV |
Fleet Aircraft Carrier |
| CVE |
Escort Aircraft Carrier |
| CVL |
Small Aircraft Carrier |
| CVS |
Seaplane Tender (purpose-built) |
| CX |
Armed Mechant Cruiser |
| DD |
Destroyer |
| LS |
Landing Ship |
| PB |
Patrol Motor Boat |
| PBc |
Coastal Patrol Motor Boat |
| PC |
Submarine Chaser |
| PE |
Escort Patrol Boat |
| PG |
Gunboat |
| PM |
Gunboat Minelayer |
| PR |
River Gunboat |
| PT |
Motor Torpedo Boat |
| PY |
Small Converted Yacht |
| SS |
Submarine
|
| YP |
District Patrol Vessel
|
