I live in a different universe!Assumed that you just had shed loads of cash to chuck away on such things as smart toasters
Sage Toaster The Smart Toast 4 Slice: Amazon.co.uk: Home & Kitchen
If the marina is supplying electricity to berth holders it should be within the specified UK limits . In the UK, the declared voltage and tolerance for an electricity supply is 230 volts -6%, +10%. This gives an allowed voltage range of 216.2 volts to 253.0 volts.Well my toaster at home seems to have a solenoid that latches the pop up mechanism down when heat elements are on. tripped in some way when it thinks toast is done. itg does sound like AC voltage at the toaster in the boat is low so solenoid will not latch. Check mains voltage but most likely a poor distribution system at the marina. So probably not much you can do about it. ol'will