Do as Seaddaldler says. Plug in at the dock outlet using your 110 volt adapter to plug into your single cord to the boat. There is a switch on the upper AC electrical panel that parallels both sides and supplies power to all your 110 circuits. You can use AC and other 110 loads, just manage them by turning your breakers on and off. If you trip the breaker on the boat due to overload, (it is in the port lazarette at the rear) just turn off ALL your 110 breakers at the AC panel then reset the boat breaker and selectively turn on what you want at the AC panel. You will not be able to run the HVAC and Water heater together or probably either of those two loads with the microwave or together, but with proper management, you should be able to power the whole boat. Your start up load on the HVAC will be much larger than the running load, but should run but will be right at 15 amps. If you had two 15 amp circuits on shore, you could attach both cords, each to separate circuits on shore, and not use the parallel switch. That would allow you to have 30 amps and run most everything. You could still trip your HVAC breaker if it is real hot and you are cycling the HVAC a lot.