Pass Of Balmaha
| Name | Pass Of Balmaha |
| Type | Sailing vessel |
| GRT | 1,571 tons |
| Country |  American |
| Built | 1888 |
| Builder | R. Duncan & Co., Port Glasgow |
| Operator | Harris-Irby Cotton Co., Boston |
| History | Steel-hulled ship-rigged sailing vessel. |
U-boat attacks on Sailing vessel Pass Of Balmaha
| Date | U-boat | Loss type | Position | Location | Route | Cargo | Casualties | |
| 1 | 24 Jul 1915 | U 36 (Ernst Graeff) | prize | Shetland area - taken as a prize and retained. | New York - Arkhangelsk | cotton | 0 | |
| Taken as s a prize and sent to Cuxhaven. Retained and commissioned as disguised raider Seeadler. | ||||||||
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