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FIGHTING SHIPS OF THE WORLD
RUSSIA / USSR
SUBMARINES
S-99 submarine (project 617) (1955)
Ships
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
|---|---|---|---|---|---|---|---|
| С-99 [S-99] | 617 | 194 Marti Yd, Leningrad | 5.2.1951 | 5.5.1952 | 20.3.1956 | damaged 19.5.1959, never commissioned again |
Technical data
| Displacement standard, t |
|
|---|---|
| Displacement normal, t | 950 / 1216 |
| Length, m | 62.2 |
| Breadth, m | 6.08 |
| Draught, m | 5.08 |
| No of shafts | 1 |
| Machinery | 1 steam-gas turbine unit / 1 8Ch23/30 diesel / 1 PG-100 electric motor |
| Power, h. p. | 7250 / 600 / 540 |
| Max speed, kts | 11 / 20 |
| Fuel, t | diesel oil |
| Endurance, nm(kts) | 8500(8.5) / 198(14.2) |
| Armament | 6 - 533 TT (bow, 12 or 20 mines) |
| Electronic equipment | Flag radar, Tamir-5LS, Mars-24KIG sonars |
| Complement | 51 |
| Diving depth operational, m | 170 |
Standard scale images
S-99 1955
Project history
Project 617 was the Soviet attempt to build an operational Waller submarine, based on technology captured in Germany in 1945. A special KB was set up in Germany in hopes of reviving the late-war Type XXVI design (22.5kts, 6 bow tubes firing forward and 4 more firing aft, without reloads). In 1946 TsKB-18 recreated the German Type XXVI design from German material; it was assigned Project number 616. This version soon proved unacceptable, so KB-18 began work on a new Project 617 to combine standard Soviet equipment with the 7500shp Walter turbine designed for Type XXVI. The preliminary design was completed by the end of 1947. A new SKB-143 was hived off from TsKB-18 specifically to develop Project 617. German Walter experts were used on the project until 1951. After the first (and, it turned out, only) boat was completed, SKB-143 was assigned to develop the first Soviet nuclear submarine. TsKB-18 took over the Walter project. The Sudomekh yard built a land-based prototype Walter powerplant, tests of which were completed in 1951.
Modernizations
None.
Naval service
On 19 May 1959 S-99 suffered an explosion while starting her Walter plant at 80m depth; mud in the hull valve of her hydrogen peroxide supply pipe caused the peroxide to decompose and ultimately to blow an 8cm opening in the pressure hull, causing flooding. S-99 was never completely repaired and commissioned. She was finally stricken in August 1961.
