One further thought, having checked what the mini circuit breaker rating is, and hence what setting to use for your hob, do remember that if the water heater is also on then the total current used by the boat may be more than the pontoon supply is willing to supply. In most cases this will be 16A but some will trip at 10A. We were always very aware of this when using our electric kettle onboard which was 2kW.
The membership association for owners of Dufour Yachts