| Name: | OTTENSEN |
| Type: | Cargo Ship |
| Launched: | 12/09/1904 |
| Completed: | 10/1904 |
| Builder: | Swan, Hunter & Wigham Richardson Ltd |
| Yard: | Neptune Yard, Low Walker |
| Yard Number: | 720 |
| Dimensions: | 4258grt, 2681nrt, 378.8 x 49.7 x 19.1ft |
| Engines: | Q4cyl (23, 32, 48 & 72 x 54ins), 492nhp |
| Engines by: | Swan, Hunter & Wigham Richardson Ltd |
| Propulsion: | 1 x Screw, 12.0knots |
| Construction: | Steel |
| Reg Number: | n/a |
| History: | |
| 10/1904 | Deutsch-Australische Dampfs Ges, Hamburg |
| 10/1914 | Imperial German Navy |
| 1914 | Renamed SPERRBRECHER 11 |
| 04/1915 | Renamed SPERRBRECHER 2 |
| 16/03/1916 | Sank |
| Comments: | 10/1914: Requisitioned by the Imperial German Navy as a mine clearance vessel |
| 16/03/1916: Sank after being mined and then colliding with | |
| NIEDERWALD North of Rottum in position 53.42N - 06.00E |