Braemar Yacht Services hosted a presentation by Cheryl Zimmerman and Michael Matthewson of Farsounder Inc. (www.farsounder.com) in our City of London office on “The uses and limitations of Forward Looking 3D Sonar (FLS) in avoiding groundings and collisions with uncharted obstructions”. The team gave a great presentation, outlining what their system can see (rocks, icebergs, bommies, reefs, shoal patches, containers, dock walls, piles and marine mammals), as well as talking about ranges (up to 1000m at present), speeds at which their system can be effective (up to 32 knots at present) and therefore reaction times. Although not mandated or required by flag or class, FLS has the potential to be an essential additional navigation tool for yachts venturing into less well charted waters and also for keeping yachts safe from uncharted and free floating obstructions in well traveled waters. Given the cost of groundings in financial, human and environmental terms, we weren’t surprised to hear how much interest in their system has grown. Although the number of systems deployed wasn’t disclosed, the list of superyacht yards they’ve worked with suggests that FLS is starting to become well established within the superyacht market.