Re: Distance in a day (24 hrs) I know it depends on ..
i will stick my neck out and say: work on a 6-knot average assuning you will motor if speed drops below say 5 knots. the weather conditions will of course have the biggest influence, for example you could reckon on 8 knots in the trades or 4-5 in contrary winds. if you don't use the engine on your route it could be anywhere between 4 & 7 knots depending on the mood biscay is in, whether the portuguese trades are established and whether you hit a levanter in the straights.
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One hull good, two hulls better.