Garmin GPSMAP 1042xsv GN+ with GMR 18HD+ & GT52-TM Boat MC Scow These blocks are designed to

These blocks are designed to work seamlessly with the Harken Big Boat blocks

Installation is simple even on narrow gunwales - just drill twice with an appropriate size hole saw

One (1) Speaker Connector

All USA/International and Canadian Marine Channels - Covers all USA

Davis Instruments UV index sensor measures the sunburning portion of the UV spectrum

Garmin GPSMAP 1042xsv GN+ with GMR 18HD+ & GT52-TM Boat MC Scow These blocks are designed toGPSMAP 1042xsv GN+ with GMR 18HD+ & GT52 TM You're a cruiser or sailor who prefers a keypad and wants built in sonar and mapping. You need this all in one 10" chartplotter to guide the way. Experience an advanced all in one solution with our 10 GPSMAP 1042xsv keyed combo. It features a large, bright screen coupled with a keypad interface and multifunction control knob. A GT52 TM transducer is included for Garmin CHIRP sonar along with CHIRP ClearV and