the attack on shipped goods
. . . submarine attacks upon merchant ships .
Yuno yourself
The convoy system helped avoid U-boat attacks due to its sheer size, and the difficulty that U-boats had when positioning to attack a large number of ships.
Destroyers, aircraft, and the convoy system.
The military vehicles traveled through town in a convoy system.
The convoy system was developed as a defense against Nazi U-Boat attacks called 'Wolf Packs' .
During World War 2 Britain in combination with other Allied nations adopted the system of escorting merchant ships using convoy grouping. This combined with mine fields provided a decrease in casualties against German U-Boats than previously.
One, the convoy system allowed the British to limit their number of losses. Second, without the convoy system, the Allies lost one out of every 10 ships. With the convoy, the number of ships lost changed to 2 out of 100 ships.
The convoy system was used to prtect American ships carrying materials to Great Britain in 1940 and 1941. These merchant ships were protected by American Warships.
Some of the synonym for convoy systems are group, fleet, cavalcade, motorcade, cortège, caravan, line, train.
The convoy system was an improvement but it was not perfect. Since the U Boats were underwater it was still hard to protect all the ships. But, they had little choice but to use the convoy system. They did not have the technology we have today to find subs so the convoys were as effective as they could be given that the U Boats would strike in the dark.