Mine hunting with side scan sonars and magnetometers is proving to be a low cost means of locating mines and mine-like objects on the ocean bottom. it is also the most effective means of precisely charting non-mine bottom objects (nombos) that consitiue the clutter in a channel or sea route that are… More

Cost reduction has driven the increased use of large cargo carriers (lcc's) in maritime transporation. the lcc's increased draft, beam and length are well recognized, but the proportionate increased height or air draft require ment is often ignored. the clearance for many bridges, designed for… More

The u.s. army corps of engineers (coe) operates a large number of gages to measure and monitor changes in tide and water levels. these gages acquire essential data for hydrological studies, hydrographic surveys, flood control and flood warning missions. none of the existing gages fully meet the coe… More

The top level design and simulation of a fault tolerance, fail-soft integrated navigation system is proposed. the proposed architecture consists of a ring laser gyro, correlation velocity speed log, heading and attitude sensors, keel depth and altitude sensors, and a shaft turns-rate sensor. an… More

An adaptive, intelligent control strategy is an essential element in the development of tactical UUV's designed for real-world missions and use by Fleet personnel rather--than scientists. This strategy must encompass all phases of the operational mission from defining the mission orders that… More