[в1961]

Ключевое слово "with"
Я так понимаю с установленной картой....зальёшь нужную да и пользуйся.

echoMAP CHIRP 44cv is preloaded with BlueChart g2 HD maps covering the coastal U.S. (East Coast, West Coast, Gulf of Mexico, U.S. and Canadian sides of the Great Lakes). It also includes all U.S. charts for the entire coastline as well as everything available on NOAA charts. In addition to the basic charts, tidal stations, currents, depth contours, IALA symbols and included fishing charts, BlueChart g2 HD offers smooth transitioning between zoom levels and more seamless continuity across chart boundaries. Customize your screens with Shallow Water Shading, which allows you to contour shade for all depth contours shallower than what you determine is your safe depth. Fishing charts emphasize bathymetric contours with less visual clutter on the display. And there’s also a choice of standard 2-D direct overhead or 3-D “over-the-bow” map views for easier chart reading and orientation.

Quickdraw Contours to Create Your Own HD Maps