By closing the 'air gap'. That is the parts of the ocean that was not able to be covered by air recconaisance. Submarines were vulnerable to detection & attack from the air and long range aircraft such as Catalina & Liberator made a huge difference. But they needed bases to fly from. The denial of such a base in the Irish Republic cost Britain dear for many months. Also, of course Asdic & better depth charges & increased range & effective escort vessels made a difference as time went on. In the beginning of the Battle of the Atlantic the Germans were sinking ships faster than they could be built. Many, many ships were sunk & huge amounts of stores & war material were lost. Britain was, for a time, in a very perilous position both to submarine & surface ships sinking unarmed merchant ships.
The Allies responded by organizing their cargo ships into convoys. The convoys were escorted across the Atlantic by destroyers equipped with sonar for detecting submarines underwater. They were also accompanied by airplanes that used radar to spot U-boats on the ocean's surface. At the same time, the United States launched a crash shipbuilding program. (The Americans textbook page 570)
The Allies won control by building many ships specifically to hunt and kill U-Boats, and by patrolling further out into the Atlantic with powerful aircraft. The convoy system with many corvette escorts helped a great deal too.
The Atlantic was a merchantman's war (supply ships). The allies won it by eliminating the German submarines (aka U-Boats) that were attacking the merchant vessels.
The Allies won control of the Atlantic by defeating the U-Boats. The built many corvettes and long range bombers to do this.
the southern ocean it is the Atlantic ocean
The English Channel is between the UK and France. It is a sea, but it connects to the Atlantic Ocean.
Atlantic Ocean is between N America and Europe
Atlantic ocean
The ocean between England and America is the Atlantic Ocean
The Atlantic Ocean
arm the merchant ships
The South Atlantic Ocean is between West Africa and South America.
The Atlantic Ocean.
The Atlantic Ocean is between England and Denmark. This area of the Atlantic Ocean is also the North Sea.
the Atlantic Ocean is between N/S America and Europe/Africa. The Arctic ocean surrounds the north pole.
The Atlantic Ocean