Lend-Lease escorts also flowed to American waters

The United States entered 1942 without enough destroyers to cover every threatened route. Some older ships had been scrapped, fifty had gone to Britain in the destroyers-for-bases agreement, and available escorts were concentrated in the Pacific or on priority Atlantic convoys. British and Commonwealth production supplied Flower-class corvettes and River-class frigates for American coastal and Caribbean service. These contributions show that wartime assistance flowed in both directions.