| Navy | The Royal Dutch Navy |
| Type | Minelayer |
| Class | Hydra |
| Pennant | |
| Built by | Rijkswerf Amsterdam (Amsterdam, Holland) |
| Ordered | |
| Laid down | 1 Oct 1910 |
| Launched | 11 Jul 1911 |
| Commissioned | 25 Jan 1912 |
| Lost | 15 May 1940 |
| History | HrMs Hydra (Luitenant 1e Klasse Johannes Adolph de Back) was beached and scuttled by her crew somewhere in the Dutch province of Zeeland after being damaged by German anti-tank gunfire. |
Commands listed for HNMS Hydra
Please note that we're still working on this section
and that we only list Commanding Officers for the duration of the Second World War.
| Commander | From | To | |
| 1 | luitenant ter zee 2e klasse (Lt.) Bastiaan Carel Mahieu, RNN | 11 Feb 1939 | 15 Jan 1940 |
| 2 | luitenant ter zee 1e klasse (Lt.Cdr.) Johannes Adolph Back De, RNN | 15 Jan 1940 | 15 May 1940 |
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