I would answer this question in general. As it's an American ship the voltage will be 110 so you will need adaptors, however when I went on Navigator they had both American and english sockets! I would take a couple of adaptors to be on the safe side. Hope this helps.
David Powell travel journalist.
They have the following -
2 pin continental type.
2 pin USA type
But the voltage is not UK type (110v only) But a 220v shaver socket is available in the bathroom for mobile phone chargers. And before someone says something I do know that electric and water dont mix !!!!!!!! So only charge overnight or when the bathroom is empty.
So take one of each type adaptors and thats will do nicely.