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| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
|---|---|---|---|---|---|---|---|
| Otter (ex-Smyrna River, ex-LSM(R)532) | L754 | Brown SB, Houston, USA | 6/1945 | 7.7.1945 | 10.1945 // 5.8.1958 | stricken 9.1967 | |
| Natter (ex-Thames River, ex-LSM(R)534) | L755 | Brown SB, Houston, USA | 6/1945 | 7/1945 | 10.1945 // 5.8.1958 | stricken 12.1967 |
| Displacement standard, t | 994 |
|---|---|
| Displacement full, t | 1175 |
| Length, m | 59.9 wl 62.0 oa |
| Breadth, m | 10.5 |
| Draught, m | 2.06 |
| No of shafts | 2 |
| Machinery | 2 diesels |
| Power, h. p. | 2800 |
| Max speed, kts | 13 |
| Fuel, t | diesel oil |
| Endurance, nm(kts) | 3000 (12) |
| Armament | 1 x 1 - 127/38 Mk 30, 2 x 2 - 40/60 Mk 1, 4 x 2 - 20/70 Mk 24, 4 x 1 - 107/9.5 chemical mortars, 5 x 2 - 127 automatic rocket launchers |
| Electronic equipment | radar |
| Complement | 143 |
Former USN LSM(R)501 class support landing ships, commissioned by Bundesmarine as Type 551.
None.
No significant events.

