Hi,
In my planning to cross the Atlantic to Europe, I was thinking how to deal with plugging my cable to shore. I use a 50A 230V cable and, I have not been able to find an adapter for European docks. Do you know if the marinas have adapters to lend? or, do you know if there is a place to purchase them?
Your help is appreciated,

Sockets in most marinas are standard blue three pin 16 amp or 32 amp connections. 50 amp in super yacht berths. In case mine dont fit (e.g in some places inDenmark) I carry a pig tail to connect to the end of my cable with bare wires to wire into a local plug that you will be able to get at a chandler locally.

You need to keep an eye on frequency. And ask before connecting. As you probably know the USA is 60hz. And most of Europe 50hz. It if you plug (as I have) a 50Hz item into a 60hzsupply you risk trashing It. Applies to motors and microwaves esp.