
| Reference | N-80/6 | N-80/8 | N-80/15 | N-80/18A |
| Diameter | 200 mm | 200 mm | 200 mm | 200 mm |
| Buoyancy | 3750 grs. | 3500 grs. | 3260 grs. | 3260 grs. |
| Depth | 600 m | 800 m | 1500 m | 1800 m |
| Working depth | 420 m | 560 m | 1050 m | 1260 m |
| Impact strength | 22 Kg metro | 25 Kg metro | 40 Kg metro | 42 Kg metro |