THE OPTIMUM DIMENSIONS FOR A LONG-RANGE, AUTONOMOUS, DEEP-DIVING, UNDERWATER VEHICLE FOR OCEANOGRAPHIC RESEARCH

From the results of a parameter optimization process based on a ''mini mum feasible volume'' criterion, it is shown that the optimum shape fo r a transatlantic, deep-diving. autonomous submersible is a ''low drag '' hull shape with a displaced volume of 4.4 m3. a length of 5.97 m an d a maximum diameter of 1.33 m. Calculations show that a vehicle of th ese dimensions, travelling in a minimum drag ''cruise'' configuration at a depth of 3000 m, say, and at a velocity of 2.5 m/sec could have a maximum range of 7000 km provided the ''hotel'' power consumption is kept low.