Hai class submarine
| Hai-class Submarine | |
|---|---|
| Class overview | |
| Name | Hai-class Submarine |
| Builders | Telakka N:o 123 Ortonikkilä, Uusilinna |
| Planned | 3 |
| Built | 3 |
| Scrapped | 3 |
| General Characteristics | |
| Type | Submarine |
| Displacement |
|
| Length | 19.5 metres (64 ft) |
| Beam | 3.3 metres (11 ft) |
| Draught | 2.9 metres (9.5 ft) |
| Propulsion |
|
| Speed |
|
| Test depth | 50 m |
| Complement | 22 |
| Armament |
|
Development
First operational combat-capable submarines in TTPL service. Designed by Engineer Iivo Puponen. Single hull design with saddle tanks. Somewhat questionable combat value but the class performance was satisfactory enough to convince TTPL to proceed developing the underwater warfare branch.
Ships in class
| Name | Builder | Laid down | Launch Date | Entered Service | Fate |
|---|---|---|---|---|---|
| Hai | Telakka N:o 123 Ortonikkilä, Uusilinna | August 1901 | May 1902 | October 1904 | Scrapped in 1918 |
| Hauki | Telakka N:o 123 Ortonikkilä, Uusilinna | June 1903 | July 1904 | November 1905 | Sunk in 1913 |
| Lohi | Telakka N:o 123 Ortonikkilä, Uusilinna | June 1903 | July 1904 | December 1905 | Scrapped in 1918 |
Service history
First unit was build as a prototype, the following pair was laid down only after the first succesfull trials of Hai. Hauki sunk while under transit to Seivästö naval base in 1913. Due their apparent obsolesce, the remaining two were kept as harbour defensive duties in Pohjoismeri during the Great War. Both were scrapped in 1918.
