SS Sagamore was a transatlantic cargo liner that was built in Ireland in 1892 for George Warren's White Diamond Steam Ship Company.

Sagamore had a single screw, driven by a triple expansion engine[1] that was rated at 593 NHP[2] and gave her a speed of 13 knots (24 km/h; 15 mph).

[3] In 1912 George Warren sold a controlling interest in his White Diamond SS Co to Furness, Withy and Co.

On 3 March she was in the Western Approaches when the German U-boat SM U-49 hit her with one torpedo amidships on her port side.

[8] On 12 March the Blue Funnel Line steamship Deucalion, outbound from the UK to South Africa, found one of Sagamore's lifeboats.

[8] Sagamore's wreck lies at a depth of more than 400 m (220 fathoms), about 150 nautical miles (280 km; 170 mi) northwest of Fastnet Rock.