How did the British protect their ships from German submarines?

The British originally used US SUPPLIED destroyers...as the war progressed, the US Navy protected the British (with their help) across the Atlantic; with US Navy DE's (Destroyer Escorts) & CVE's (Escort Carriers also known as Jeep Carriers).

When the Word or Words CVE or Aircraft Carrier(s) are used; that translates into AIRPLANES. Another Words airpower was also used to protect the British while crossing the Atlantic Ocean.

Ans 2

The ALLIED convoys were escorted mainly by Royal Canadian Navy ships and patrolled over by Royal Air Force Coastal Command aircraft from Britain and USAF aircraft operating from Canada and Greenland.

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