Princess May
| Name | Princess May |
| Type | Sailing vessel |
| GRT | 104 tons |
| Country |  British |
| Built | 1894 |
| Builder | J. Allen & Co., Poole |
| Operator | William T. Whitmore, Poole |
| History | Wooden ketch barge |
U-boat attacks on Sailing vessel Princess May
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 21 Oct 1916 | UB 29 (Herbert Pustkuchen) | Sunk | 25 miles S of Beachy Head | Havre - London | bones | 0 |
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