Hi all. First post. I'm a sailor from Australia. Currently own a nice sailing catamaran that i built. As i get old it is too hard to hoist the main sail and all the trimming and reefing gets too hard. I am planning on building the perfect sailors motor boat basically i am looking at replacing the sails with solar panels. The design will be a trimaran for stability and to make a hull shape that is very slippery. Looking at approx 40 foot LOA with 16 foot BOA.
I hope you guys can check the maths to see if i am being too optimistic in my assumptions.
Area of solar panels 32 sq meters - gives 5 kW system - in low tropics gives 20+ kWH per day.
Propulsion by twin motors in the amas say 10 hp = 7.5 kW gives cruising speed 5 to 6 knots.
Battery pack similar to the one in a tesla car 75 kWH weight of batteries 540 kg. Total weight of boat 3 ton with back up 10 kWH generator for extended cruising.
Does this seem feasible? Does my maths add up?
Chris P
Posted by: chrispurkiss@bigpond.com
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