Origin of U-boat
Examples from the Web for u-boats
After all, German U-boats had killed more U.S. sailors in the north Atlantic than died at Pearl Harbor.
The Spanish authorities are expected to reply that if that is what the U-boats are after there is no need for them to leave home.
U-boats were reported early in the action, but there is no hint that they took any real part in the battle.
All parts of the German U-boats are made in standard sizes and from the same original pattern.
The submarines that did destruction in this region were the type that have gained universal fame as the U-boats.The Victory At Sea|William Sowden Sims
Capelle rejected the proposal on the pretext "that nobody would know what to do with so many U-boats when the war was at an end."In the World War|Count Ottokar Czernin