SS Sizergh Castle was a British cargo ship that sprang a leak and foundered in the North Atlantic, while sailing from Galveston, Texas, United States to Antwerp, Belgium with a cargo of wheat.

Sizergh Castle was constructed at the William Pickersgill & Sons Ltd. shipyard in Sunderland, England.

[1] The ship was 110 metres (360 ft 11 in) long, with a beam of 14.1 metres (46 ft 3 in) and a depth of 5.4 metres (17 ft 9 in), assessed at 3,783 GRT.

She had a triple-expansion steam engine rated at 349 nhp driving a single screw propeller.

[1] On 7 October 1919, Sizergh Castle was on a voyage from Galveston, Texas, United States, to Antwerp, Belgium, with a cargo of wheat when she sprang a leak and foundered in the North Atlantic (45°15′N 44°6′W / 45.250°N 44.100°W / 45.250; -44.100).