Piet Hein
| Name | Piet Hein |
| Type | Fishing vessel (sail) |
| GRT | 100 tons |
| Country |  Dutch |
| Built | 1916 |
| Builder | Uitenbogaardt, Vlaardingen |
| Operator | N.V. Rederij v/h M.Dirkzwager Gz., Maasluis |
| History | Registration: MA 16; iron-hulled. |
U-boat attacks on Fishing vessel (sail) Piet Hein
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 6 Jul 1917 | UC 33 (Martin Schelle) | Sunk | Stopped and sunk by gunnery in the North Sea | 56.50N, 05.20E | 0 |
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