C-MAP 4D NA-D931 Lake Michigan [M-NA-D931-MS] Marine Safety All compasses come standard with

All compasses come standard with 12v lighting

of buoyancy upon deployment

The SIM100 continually monitors these switch closure devices and broadcasts information of the NMEA 2000 network about the switch state so the crew can be alerted to potential conditions or problems that warrant further investigation

Battery monitor

Robust plastic construction with nitrile rubber valve

C-MAP 4D NA-D931 Lake Michigan [M-NA-D931-MS] Marine Safety All compasses come standard withC MAP 4D NA D931 Lake Michigan The next evolution in navigation solutions. C MAP 4D adapts to your boating needs because it's the only digital chart that offers advanced features and lets you add data and services as they become available. Full 4D Content When you choose Full 4D content you will experience the latest in navigation data and technology such as: 3D Chart View The world has three dimensions. When you add the 4th dimension of time meaning