Convoy SC 7

Convoy SC-7
Part of World War II
Date 16–19 October 1940 Location Western Approaches Result German victory
Belligerents
Nazi Germany	United Kingdom
Commanders and leaders
Karl Dönitz	L. D. I. Mackinnon
Strength
7 U-boats	35 ships 5 escorts
Casualties and losses
None	20 merchant ships sunk, 141 dead total 79,592 gross register tons (GRT)

SC 7 was the code name for a large Allied World War II convoy of 35 merchant ships and six escorts, which sailed eastbound from Sydney, Nova Scotia for Liverpool and other United Kingdom ports on 5 October 1940. While crossing the Atlantic, the convoy was intercepted by one of the first Kriegsmarine submarine wolfpacks. During the ensuing battle, the escort was completely overwhelmed and 20 of the 35 cargo vessels were sunk and 2 more damaged, with 141 lives lost. The disastrous outcome of the convoy demonstrated the German submarines' potential of being able to work more efficiently using wolfpack tactics and the inadequacy of British anti-submarine tactics at the time.

The slow convoy SC-7 left Sydney, Nova Scotia on 5 October 1940 bound for Liverpool and other British ports. The convoy was supposed to make 8 kn (15 km/h; 9.2 mph) but several merchant ships were much slower than this. The convoy consisted of older, smaller ships, mostly with essential cargoes of bulk goods. Much of the freight on these ships originated on Canada's east coast, especially from points to the north and east of Sydney. Typical cargoes included pit props from eastern New Brunswick for British coal mines, lumber, pulpwood, grain from the Great Lakes ports, steel and steel ingots from the Sydney plant and iron ore from Newfoundland, bound for the huge steel plants of Wales. The largest ship in the convoy was the 9,512-ton oil tanker MV Languedoc, belonging to the Admiralty, which was bound for the Clyde with fuel for the Royal Navy. Another ship, the British SS Empire Brigade, carried a valuable cargo of trucks.

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