| Name: | ADMIRABLE, ADVERSARY, ASPERITY, AUSTERE, AWAKE & AZTEC |
| Type: | Submarine |
| Keel: | n/a |
| Launched: | n/a |
| Completed: | n/a |
| Builder: | Vickers-Armstrongs Ltd |
| Yard: | High Walker |
| Yard Number: | 76, 81, 77, 78, 79 & 80 respectively |
| Dimensions: | 1385disp surf, 1620disp subm, 280.5 x 22.3 x 16.8(draft)ft |
| Engines: | 2 x Oil engines, 430hp; 2 x electric motors, 1250hp |
| Engines by: | |
| Propulsion: | 2 x Screws, 18.0knots surf, 8.0knots subm |
| Construction: | Steel |
| Armament: | 1 x 4ins QF, 1 x 20mm guns, 6 x 21.0ins fwd, 4 x 21.0ins aft torpedoes |
| History: | |
| British Royal Navy | |
| Cancelled | |
| Comments: | Member of the A or Amphion Class of submarines |
| 1945: All were cancelled, none had been laid down. | |
| ADMIRABLE, ordered 30/07/1943, was to be allocated pennant P434 | |
| ADVERSARY, ordered 20/11/1943, was to be allocated pennant P457 | |
| ASPERITY, ordered 30/07/1943, was to be allocated pennant P444 | |
| AUSTERE, ordered 30/07/1943, was to be allocated pennant P445 | |
| AWAKE, ordered 30/07/1943, was to be allocated pennant P459 | |
| AZTEC, ordered 30/07/1943, was to be allocated pennant P455 |