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FIGHTING SHIPS OF THE WORLD
NETHERLANDS
SUBMARINES
DOLFIJN submarines (1960-1966)
Photo
Tonjin 1979 Many thanks to Wolfgang Stöhr for additional information on this page.
Ships
| Name | No | Yard No | Builder | Laid down | Launched | Comm | Fate |
|---|---|---|---|---|---|---|---|
| Dolfijn | S808 | 279 | Rotterdamse Droogdok Mij | 30.12.1954 | 20.5.1959 | 16.12.1960 | stricken 2.1985 |
| Zeehond | S809 | 280 | Rotterdamse Droogdok Mij | 30.12.1954 | 20.2.1960 | 16.3.1961 | test hulk 1.1990 |
| Potvis | S804 | 782 | Wilton-Fijenoord, Schiedam | 17.9.1962 | 12.1.1965 | 2.11.1965 | sold 7.1994 |
| Tonijn | S805 | 783 | Wilton-Fijenoord, Schiedam | 27.11.1962 | 14.6.1965 | 24.2.1966 | museum boat 6.1994 |
Technical data
| Displacement standard, t | |
|---|---|
| Displacement normal, t | S808, 809: 1520 / 1830 S804, 805: 1509 / 1831 |
| Length, m | S808, 809: 78.3 S804, 805: 79.5 |
| Breadth, m | 7.90 |
| Draught, m | 5.00 |
| No of shafts | 2 |
| Machinery | 2 MAN 12-V6V 22/30 diesels / 2 electric motors |
| Power, h. p. | 2800 / 4000 |
| Max speed, kts | 14.5 / 17 |
| Fuel, t | diesel oil |
| Endurance, nm(kts) | |
| Armament | 8 - 533 TT (4 bow, 4 stern, 20) |
| Electronic equipment | ZW-06 radar, sonars, ECM suite, M8 CCS |
| Complement | 64 |
| Diving depth operational, m | 300 |
Standard scale images
Potvis 1970
Graphics
Tonjin 1979 Many thanks to Wolfgang Stöhr for additional information on this page.
Project history
These were the first submarines to be built postwar for the Royal Netherlands Navy, and were of a novel triple-hulled design. Three cylinders were arranged in a triangular shape within an outer casing. The upper cylinder accommodated the crew, control spaces and armament, while the shorter lower cylinders each housed an independent propulsion unit comprising a twelve cylinder diesel, an electric motor, and a 168-cell battery.
The order for the second pair was postponed while the possibility of nuclear propulsion was considered. It was reinstated in 1962, and Potvis and Tonjin were completed with a number of modifications which were subsequently extended to the earlier boats.
Modernizations
early 1970s, Zeehond: new sonar was installed.
1978-1979, Potvis, Tonjin: diesels were replaced by 2 SEMT-Pielstick PA4 (3100hp), power of electric motors was increased to 4400hp.
Naval service
No significant events.
Many thanks to Wolfgang Stöhr for additional information on this page.
