Features Increased Radar Cross Section Increased Heel Response & High S Band Response Increased 360 Response Cycle Suitable for sailing yachts RIBs and motor cruisers Height: 61cm Diameter: 24.5cm Fixing centres: 56.9cm Fixing holes: 8mm Weight: 1.9kg Weight: 2.3kg Suitable for vessels 9 metres and above. Robust Polyethylene case available in white orange yellow red green or black. The EM230 model has been successfully tested by QinetiQ to ISO 8729-1999 and meets RORC ORC ISAF 2012/13 and WCC requirements of 10M2. Echomax EM230 has been adopted and used by the UK Military Forces and others throughout the World. Used by the US Navy for target and other uses. The EM230 has Ships Wheel Mark certification for life boats and rescue craft as from December 2012. Mast halyard or deck bracket mount. Available in @+/-3-24m maximum - Stated Performance Level (SPL) +/- 3 4.7m The Echomax EM230 has NATO stock number 5840 99 904 3941.