Mines, torpedoes and submarines were all employed, and with the "Monitor" may fairly be said to have begun the application of mechanical science to the uses of naval war.
The German battle cruiser " Goeben " eluded the British Mediterranean fleet and got safely into the Sea of Marmora; three British cruisers were sunk by submarines in the North Sea; and a British squadron under Adml.
On the other hand, German sporadic attacks by sea and air on British watering places and the increasing activity of German submarines gave Mr. Churchill and the Admiralty much concern.
The shipbuilding yards developed greatly and war vessels of all types, including dreadnoughts and submarines, were constructed during the war.
Tirpitz advances two contentions; first, that he would have sent the navy into decisive action at an earlier stage of the war; secondly, that he would have made an earlier and more ruthless use of the German U-boats; but his opponents traverse both these claims, and in particular assert that as Secretary of State he had neglected the construction of submarines, so that Germany entered the war with a comparatively small supply of these vessels.