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FIGHTING SHIPS OF THE WORLD
PORTUGAL
SUBMARINES
medium submarines
Ships
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
|---|---|---|---|---|---|---|---|
| i | CRDA, Monfalcone, Italy | 10.1931 | 27.11.1936 | 8.1937 // --- | completed for Italy (Argo) | ||
| ii | CRDA, Monfalcone, Italy | 10.1931 | 12.12.1936 | 9.1937 // --- | completed for Italy (Velella) |
Technical data
| Displacement standard, t | 689 |
|---|---|
| Displacement normal, t | 780 / 1000 |
| Length, m | 63.2 |
| Breadth, m | 6.93 |
| Draught, m | 4.46 |
| No of shafts | 2 |
| Machinery | 2 Fiat diesels / 2 CRDA electric motors |
| Power, h. p. | 1500 / 800 |
| Max speed, kts | 14 / 8 |
| Fuel, t | diesel oil 60 (norm.) |
| Endurance, nm(kts) | 5300(14) / 100(3) |
| Armament | 1 x 1 - 100/47 OTO 1931, 2 x 2 - 13.2/76, 6 - 533 TT (4 bow, 2 stern, 10) |
| Electronic equipment | hydrophone |
| Complement | 46 |
| Diving depth operational, m | 90 |
Standard scale images
Argo 1940
Project history
Ordered by Portugal in 1931, but soon the contract has been terminated, and in 1935 it is redeemed by Italian Government for own Navy. The design was developed by builder as moderated variant of Balilla class. Partially double-hulled. Successful medium submarines with high endurance and easy manoeuvrability. Rather low speed became an appreciable lack. They served as prototype for wartime built submarines of Flutto class.
