Primo Longobardo 1975
| Name | No | Yard No | Builder | Laid down | Launched | Comm | Fate |
| Primo Longobardo (ex-Pickerel) | S501 | Boston N Yd, Charlestown, USA | 2.1944 | 15.12.1944 | 4.1949 // 18.8.1972 | stricken 1.1980 | |
| Gianfranco Gazzana Priaroggia (ex-Volador) | S502 | Portsmouth N Yd, USA | 6.1945 | 17.1.1946 | 10.1948 // 18.8.1972 | stricken 5.1981 |
|
Displacement standard, t |
|
|
Displacement normal, t |
1975 / 2450 |
|
Length, m |
99.5 |
|
Breadth, m |
8.20 |
|
Draught, m |
5.20 |
|
No of shafts |
2 |
|
Machinery |
4 Fairbanks-Morse diesel-generators / 4 electric motors |
|
Power, h. p. |
4610 / 5400 |
|
Max speed, kts |
17.2 / 14.5 |
|
Fuel, t |
diesel oil 378 - 472 |
| Endurance, nm(kts) | 11000 (10) / 96 (2) |
|
Armament |
10 - 533 TT (24 torpedoes or 40 mines, 6 bow, 4 stern) |
|
Electronic equipment |
BPS-1, BPS-4, BPS-5 radars, BQR-2, BQS-2, SQR-3, BQG-4 PUFFS (most submarines), BLR-1 ECM suite |
|
Complement |
86 |
|
Diving depth operational, m |
135 |
Project history: These ex-USN Balao class submarines, had been given the GUPPY II modernization in 1952-54 and the very extensive GUPPY III modernization in 1961-63. These were the first foreign transfers of the US PUFFS (BQG-4) passive underwater fire control system.
Modernizations: None.
Naval service: No significant events.
Gianfranco Gazzana Priaroggia 1978
© Ivan Gogin, 2017