The fast profiler

The Fast Profiler is an autonomous, streamlined, gravity driven vehicle capable of high speed (15 knots) vertical excursions to depths of 6000 meters. This axially symmetric torpedo shaped vehicle can guide itself to an acoustic beacon at the surface. Phase difference measurements made at four hydrophones mounted in the nose of the body are used to actuate control surfaces to correct vehicle attitude. The oceanographic sensor package is initially intended to measure conductivity and temperature as a function of depth. These variables are used in the equation of state of seawater to calculate the total transport of large-scale circulation patterns. This paper outlines the mechanical and electronic design of the fish.