I intend travelling to the Kimberley this season. Does anyone know if you cruise above the 23.5 degrees South after 1st April if you have to advise your insurance company and if so, did they have to pay an extra premium for the time in the Kimberley.
I haven’t heard of advising the insurer about sailing north of the Tropic of Capricorn at any time of year. Some policies require the vessel to be moored in a cyclone rated marina during cyclone season. In recent years, many insurers will not insure boats permanently moored in the NT, but that should not effect you if you are just cruising through the area and not staying there.
My policy covers me for up to 200NM off the Australian coast without restrictions on locality. If you have any doubt about your policy, you should contact the insurer for clarification.