• NS006644 : 657 Display Only NO TRANSDUCER
• NS006641 : 657 With Transom Mount Transducer

Compact and powerful, the Northstar Explorer Series Combo Units are user-friendly versatile on-board information systems.

Explorer Combo units have built-in 32 MB background maps with high level cartographic detail and the option of employing C-MAP NT MAX charting technology provided by the world’s leading cartography company C-MAP. If there are fish to be found, you’ll find them with an Explorer Combo unit from Northstar.

Explorer 657 Northstar’s 5" high resolution VGA Chartplotter/Fishfinder combo with Fuel Management and AIS functionality.

The built-in 32 MB regional background map still offers reliable entry-level use, waiting to be enhanced with C‑Map’s latest cartography: NT MAX. With a 640 x 480 pixel screen, your display becomes 4 times sharper than the Explorer 650, being a truly impressive, bright and highly functional addition to your boat.

With a range of optional fuel add-ons, the Explorer 657 is a powerful travel tool for your boat.

Track-Your-Buddy
When connected with the Explorer 721 VHF, you can automatically plot the position of your DSC radio-equipped boating buddies.

Fish like the Pros…
High vertical pixel count plus 100X zoom functions mean you can see bottom structure detail like never before. Fish inshore or offshore with the dual frequency sounder and 600 Watts of output power.

Fuel Managment
Explorer Chartplotter/Fishfinder Combos are the perfect devices for managing important fuel consumption and economy information. Built-in software allows you to plot and calculate fuel economy curves easily, helping you get the best performance year after year.

C-Map for All
All units run C‑Map NT MAX cartography, with enhanced port details, tidal overlays, location photos and comprehensive chart info.