ForwardScan transducer uses forward-looking sonar to provide a clear view of the bottom ahead of a boat. This award-winning technology is a powerful defence against running aground in shallow, unfamiliar, or poorly charted waters. ForwardScan offers a forward view of 4-5 times of depth; for example in three metres (10 feet) of water, the user can see the bottom 12-15 metres (40-50 feet) ahead. Under ideal conditions ForwardScan can look ahead up to 8 times depth. The 180 kHz transducer is designed to minimise interference from common 200 kHz transducers, enabling it to be used alongside existing fish-finding or depth-tracking sonar. With Simple 2D View and Chart Overlay the user can see a simple view of the bottom ahead. Bottom Colour Tracking shows the bottom as a solid terrain in an uncluttered, side-on picture. For more detail, the user can choose to display sonar returns from throughout the water column; these can illustrate other potential hazards such as dock posts. Ideal for cruising, ForwardScan depth data can also be overlaid on charts: Heading Line View uses colour-coded segments to represent deep, medium, and shallow water ahead. Depths are customisable to suit the boat���s draught, and a shallow depth alarm helps to ensure the boat is never caught unaware. ForwardScan suits almost any vessel and hull type thanks to its stainless steel through-hull mounting sleeve. The sleeve and included fairing block can accommodate 29mm (1.15 inch) thick hulls at 12 degrees deadrise, or 19 mm (3/4 inch) hulls at 20 degrees. A self-closing valve means the ForwardScan transducer can be inserted and removed from the sleeve while on the water, allowing quick and easy transducer maintenance.