Ultonia
| Name | Ultonia |
| Type | Steamer |
| GRT | 10,402 tons (one of the largest ships hit) |
| Country |  British |
| Built | 1898 |
| Builder | C. S. Swan & Hunter, Ltd., Newcastle |
| Operator | Cunard Steam Ship Co., Ltd., Liverpool |
| History | Passenger accomodation fitted in 1899 and increased in 1904. |
U-boat attacks on Steamer Ultonia
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 27 Jun 1917 | U 53 (Hans Rose) | Sunk | 190 miles SW of Fastnet. 48.22N, 11.28W per KTB | 48° 25'N, 11° 23'W | New York - London | general cargo | 1 |
Position of attack on Ultonia
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