European (220/50hz) vs US (240/60hz) Wiring while on US shore power

I'm looking to upgrade. One of the boats I'm looking at is wired 220v/50hz. Anyone care to share the practical implications of use in the United States or ways to utilize US shore power? I understand hair dryers, microwaves and small appliances would need to be 50hz/European but I would think the air conditioning would overheat on US shore power. Frig, being 12 volt, should be OK right? Any thoughts on devices/equipment that might convert the frequency when on shore power? Thanks for your input.

this past spring we needed to replace our hot water tank. I was looking for a specific brand which seemed to be sold out everywhere in the U.S. There was a marine supply that had the brand, the inlet/outlet configuration we needed but was wired European 50hz. The sales person did not know what would happen, no one in his office knew what would happen, so I talked to the electrical department head at the technical school I work at and asked what would happen. His response was that we would have one heck of a fire. 50hz appliances, battery chargers, refrigeration, water heater elements, inverters, etc and 60hz items are not interchangeable.

Thanks for the input Glory

Europe is 220 Volts versus North America which is 120 Volts
North America uses 120 times 2 hot wires to get 240 volts
a typical shore power connector and yellow cable available from west marine etc
is 120 Volts 30 amps and thus not compatible with 220 volts

the 12 volt system should be Ok except for the Battery charger 220 v versus 120 v
Ed