San Hilario
| Name | San Hilario |
| Type | Tanker |
| GRT | 10,157 tons (one of the largest ships hit) |
| Country |  British |
| Built | 1913 |
| Builder | Palmers’ SB. & Iron Co., Ltd., Newcastle |
| Operator | Eagle Oil Transport Co., Ltd., London |
| History |
U-boat attacks on Tanker San Hilario
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 20 Apr 1917 | U 43 (Hellmuth Jürst) | Sunk | 270 miles WxN of Fastnet | 50° 55'N, 16° 28'W | Puerto Mexico - Queenstown | petroleum | 0 |
| Master taken prisoner. | ||||||||
Position of attack on San Hilario
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