lustyd
Well-known member
It's pretty accurate I find, but you have to understand that the rule is 10% to maintain current condition. Condition deteriorates over time regardless of maintenance, and so expectations lower on older boats, lowering costs.I regularly see this 10% rule for maintenance, say if you spend 100k on a boat it will cost you 10k per year to maintain
All that to say, it's more about the owner than the boat. Someone who owns a £1M yacht will spend a lot more keeping it nice than someone who owns a £10k yacht in general.
You also have the issue that for a given boat length an item will cost either the square or the cube of the length because for ropes they have to be thicker, and sails have more area and fuel costs relate to tonnage. If you double the boat length, the stainless steel in the winch isn't just doubled. Marinas give you area, not length. Even electrical cables need to be thicker on a longer boat unless the voltage increases but then all the kit gets more expensive!