The main Allied countermeasure was to sail in convoys, with naval ships guarding and shepherding the often slow-moving cargo ships. Eventually, improvement in U-boat detection, and the use of aircraft carriers and long range aeroplanes, allowed the naval ships to begin to actively hunt and often destroy some or disperse the U-boat wolf packs.
They built ships, airplanes, rifles, ammunitation, tanks, and other items needed for war. Other women flew airplanes from the factories to training bases and to ports to be shipped into combat zones.
The use of the convoy system protecting merchant ships as they crossed the Atlantic , airplanes for reconnaissance , radar , depth charges .
Model ships were popular before WW2; after WW2, model airplanes, especially rubber band powered airplanes, then fuel (engine) powered model planes became popular. Children also enjoyed collecting scrap metal, knitting and, "spying",
Nothing really. They had cables hanging down from them and were moored over ships and beaches. This made it difficult for enemy airplanes to line up for bombing and strafing runs, as they risked getting their propellers tangled or shearing off wings.
definetly cruise ships.
Yes , for example container ships .
Autos, airplanes and ships.
There are thousands of signs.
Ships, cars, airplanes
It is the manufacture of airplanes and space ships.
Airplanes move through the air in a similar fashion to the way boats move through the water.
Aircraft carriers
Depression contour line
Different kinds of radar are
Helicopters can land on small ships, clearings in forest, on top of buildings etc. Airplanes can not do these things
Light, cheap airplanes were fitted with a bomb and the pilots were instructed to crash their airplanes into enemy ships.