U5 (HOLLAND) class, submarine
- 1909-SMU V., Built, Whitehead & Co. Torpedo & Machine Works , Based on the plans of the American Electric Boat and Co's Holland type submarine. Later four more units were built for Danmark. Keel laid: 1908.02.21. Launched: 1909.02.10.1909-SMU VI., Built, Whitehead & Co. Torpedo & Machine Works , Keel laid: 1908.04.09. Launched: 1909.06.12.