Anti submarine warfare
Anti-Submarine Warfare.
Anti-Submarine Warfare.
Anti submarine warfare
Principally the Imperial German Navy and the Royal Navy - both enormous forces at the time. Submarines and anti-submarine warfare were still in their infancy in WW1, but it was a German submarine that torpedoed the liner Lusitania off the coast of Ireland.
Enemy surface ships are the main target of submarine warfare
The renewal of unrestricted German submarine warfare had devastating effects on shipping in 1917. In terms of tonnage, the Germans sank 540,000 tons in February 1917, 578,000 in March and 874,000 tons in April. Anti-submarine measures by the Allies, however, began to reduce this calamity.
Germany hoped that submarine warfare would lead to war.
Germany's submarine warfare was unrestricted. These attacks led to World War I.
By torpedoing their enemy ships: it was all they could do and were designed to do; but anti-submarine warfare was in its infancy and submarines were very hard to detect once submerged. They are even stealthier now.
USA
submarine warfare