Clan Macnab
| Name | Clan Macnab |
| Type | Steamer
|
| GRT | 4,675 tons |
| Country | British |
| Built | 1905
|
| Builder | W. Doxford & Sons, Ltd., Sunderland
|
| Operator | The Clan Line Steamers, Ltd. (Cayzer, Irvine & Co.), Glasgow
|
| History | Turret hull steamer.
|
U-boat attacks on Steamer Clan Macnab
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties |
| 1 | 4 Aug 1918 | U 113 (Philipp Recke) | Sunk | 14 miles NNW of the Pendeen LH
| 50.20N, 05.55W
| Plymouth - Glasgow
| in ballast
| 22
|
| 2 torpedoes at 6.17am
|
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