The U-Boat peril
U-Boats using forward bases in France and Norway
u-Boats begin hunting in `wolf packs`
Germans fight a tonnage war
the Convoy system, Depth Charges and escorts
Convoys are used to get ships safely across the Atlantic
Protected by destroyers
Depth chargers, Asdic, Hedgehog, radar and long range aircraft and carrier based aircraft all help cure the problem
U-Boats using forward bases in France and Norway
u-Boats begin hunting in `wolf packs`
Germans fight a tonnage war
the Convoy system, Depth Charges and escorts
Convoys are used to get ships safely across the Atlantic
Protected by destroyers
Depth chargers, Asdic, Hedgehog, radar and long range aircraft and carrier based aircraft all help cure the problem