Come and visit the R2Sonic stand J3 Please attend our training and demonstration sessions on:   The Integrated Sediment Profiler (ISP), a parametric system operating at frequencies between 5kHz and 20kHz and the beamwidth is ±1.5°.  9 April, 14.00pm, Ray Beverton Room 044/11   TruePix(TM) which provides highly compressed water column imagery (1% of traditional…