The Jan van Amstel class minesweeper HNMS Pieter Florisz. She was lost on 14 May 1940.
Technical information
| Type | Minesweeper |
| Displacement | 525 BRT |
| Length | 56.8 m |
| Complement | 45 men |
| Armament | 1 3" gun 4 .50" MG AA (2x2) 40 mines |
| Max speed | 15 knots |
| Engines | Triple expansion engines, 2 shafts |
| Power | 1600 HP |
| Notes on class | Purpose designed minesweepers also fitted for minelaying. |
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6 minesweepers of the Jan van Amstel class lost. See all Minesweeper classes. |
Royal Dutch Navy (more on 
