Easy-to-use GPS Handheld NavigatorHigh-sensitivity GPS marks and stores 1,000 waypoints and 100 tracksMarks your favourite locations to easily navigate back to themGarmin SailAssist™ for GPS 73 includes virtual starting line, heading line, countdown timers and tack assistSunrise/sunset, estimated time of arrival, other calculations and marine dataBuilt-in backlightIt floats!This easy-to-use handheld is the perfect navigational solution for boats, sailboats or small watercraft that do not have a chartplotter. It’s also ideal as an important emergency navigation backup for all vessels. Its high-sensitivity GPS marks and stores 1,000 waypoints and 100 tracks so you can navigate right back to them. Use on land or water — it floats! Features SailAssist, including virtual starting line, heading line, countdown timers and tack assist.