The first Hydra was designed by the German naval architect Kurt Reinke, Bremen, in 1972 - 1974. It was a multichine construction with a centrecockpit and an additional aft cockpit for the helmsman and a conventional keel with 2,2 meter (7'3") draft.
The idea was to create an extremely seaworthy as well as a fast sailing yacht: a cruiser-racer. The world aluminium prices were high, but the owner choose aluminium, still todays best material.
The hull became a modernised replica of Colin Archers world famous rescue-boat-type, hull length 14 meter and beam 4 meter, hydrodynamically same shape. The original displacement of 36 tons was reduced to a construction displacement of 13 tons.
Seaworthiness was even increased by adding a whaledeck, commonly used for fishing vessels and the famous German rescue boats of these times, the Theodor Heuss-class and later the bigger John T. Essberger-class.
The original Colin Archer sailing-rescueboats were successful even into the late Thirtys of the last century, picking up sailors in the wintertime from wrecked steamers off the Norwegian coast.
The whaledeck gives additional floating power, even if the boat is heeled to an angle of much more than 90 degrees. That means she will come up again fast and easily after being rolled over by a freak wave. She fullfills the highest classification class "0" Transocean, which is even above the former highest standard "1" High Sea.
In these days the designer Reinke had the chance to do tests on the Hydra hulldesign with models in a test tank at a British University. So, it was no surprise that the first Hydra, as a fully equipped cruiser with all necessary facilities for best comfort, won the Victoria/Maui race 1975 by calculated time against many real racers, as reported by the American magazine "Sailing.