In order to run your charts on the sailboat for 8 hours you need to plug it in.
MacBook Pro operates on 18 VDC.
There is a possibility it would run on 12 VDC, but I don't want to try.
The MacBook Pro 110VAC power supply uses 85 Watt.
Draw: (85 Watt/110 Volt) = 0.77 to 0.9 Amps (conversion waste)
So the basic alternator with 2 Ampere charging should sustain it when motoring.
Of course you need a 12 VDC to 110VAC inverter (100W) that costs about $35.
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apt quotation..
“A man should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.” by Robert A. Heinlein (author, aeronautical engineer, and naval officer)
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