Simrad Cruise 7-7-inch GPS Chartplotter with 83/200 Transducer, Preloaded C-MAP US Coastal Maps
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Questions & Answers
Because I am not on the boat, I don't know, but updating is as simple as connecting to a computer via Wi-Fi. A number of sites allow you to order any chart in the world for a minimal fee.
In fact, yes. With the unit, you get a template for cutting out pieces. If you order a flush mount kit from Simrad, it will fit flush with your existing wall. According to the kit, it consists of a gasket, which you can probably make on your own.