In short, "dunno". I once cut up a f/g dinghy to be able to manhandle it for the hard rubbish day in our municipality.
I remember Gippsland Ports using an excavator to drag a houseboat up the bank, and then crush all the parts and load into a bin, much like demolishing a house.
But landfill is charged by the cubic metre. general waste being $190/m3.
www.monash.vic.gov.au/Waste-Sustainability/Monash-Recycling-Waste-CentreObviously, all metal (winches, mast, etc) can be offered on Gumtree, etc and the remainder would be cut or crushed to reduce volume. Getting the lead off or out of the keel would be recyclable and able to be sold.