Sonardyne (英国) / 潜水员定位设备
潜水员跟踪系统
Scout 短基线系统，基于声学定位原理，用于确认潜水员的水下位置，也可以确定ROV和拖拽声纳的位置，工作深度可以超过1000米，这个系统通过计算海底目标的位置，同时给出位于船上的感应器测量出的声学横轴及纵轴的距离，来确定水下目标的位置。这种技术成为超短基线。该技术广泛的应用于石油和海洋调查。
Scout潜水员跟踪
Scout USBL is a complete vessel based acoustic positioning system designed for tracking divers, ROVs and towfish in waters up to 1,000 metres. The system calculates the position of a subsea target by measuring the range (distance) and bearing (heading) from a vessel mounted transceiver to a small acoustic transponder fitted to the target; a technique known as Ultra-Short BaseLine (USBL) positioning. USBL is widely used by the offshore survey and ocean scientific industries as it offers high accuracy performance combined with efficient subsea tracking operations.