THE design and construction of airships in the United States was inaugurated by the Navy in 1917, with the B class of sixteen small airships. These were built for training and coast patrol. They were used to train 150 pilots and covered 140,000 miles of patrol without loss of life. The following year the C class of twice the size was brought out and proved very successful. The development of airship construction has progressed rapidly, but because of such a delayed beginning, the United States is still very far behind England and Germany. In particular, the large rigid airships of the Zeppelin type have not yet been attempted here, but their use during the war by the German navy, as scouts over the North Sea, indicates that they are necessary to a modern fleet. A short account is given of the German North Sea air organization, showing the seaplane bases laid out to cooperate with the airships.