dunedin
Well-Known Member
36 ft is precisely in the band the OP stated in the original post - "36-38ft, maybe 40ft at a push".Very small
36 ft is precisely in the band the OP stated in the original post - "36-38ft, maybe 40ft at a push".Very small
A boat with a bigger overlapping headsail is not necessarily better for light winds. They generally have smaller mainsails than boats designed for blade jibs.... . I assume the uppers out there limits the extent to which an overlapping headsail can be used, which might have appealed for my brief of good light airs performance?
View attachment 207606
Here's the arrangement on the Jeanneau 39i.... so it looks like a conventional track, which terminates in line with the lowers, the upper shroud is then out on the gunwale. Ouch my head hurts (showing my lack of experience here!). So it sheets between uppers and lowers, upwind presumably is fine, downwind ?? . I assume the uppers out there limits the extent to which an overlapping headsail can be used, which might have appealed for my brief of good light airs performance?
The efficiency and ease of handling of the big main, blade jib rig outweighs the large overlap quite easily. That’s before you add a code 0. Most especially if you don’t have a spare crew to help the genoa round the front of the mast.A boat with a bigger overlapping headsail is not necessarily better for light winds. They generally have smaller mainsails than boats designed for blade jibs.
You need to look carefully at the numbers for sail area vs displacement. Also boats that are faster in light winds often have narrower beam at waterline level.
I am not an expert on the Jeanneau 39i but i dont believe these were intended as performance cruisers per se (unlike Sun Fast), just a new generation of cruiser (with different moulding method?) - though nothing wrong with that. But check the numbers vs other options.
The best light airs boats won't have overlapping genoas. It's far better to have the same sail area set on a taller, higher aspect ratio, rig.I assume the uppers out there limits the extent to which an overlapping headsail can be used, which might have appealed for my brief of good light airs performance?

Taking the example of say Hanse, these are fitted with big mains and self-tackers for real ease. They come with Genoa tracks too, so my assumption was (not based on any real expertise!) that if you wanted to improve performance particularly in light airs you would fit a larger Genoa. For the example of the sun odyssey 39i is this however prohibited by the shroud arrangement? Ie this puts me off vs more conventional rigging (although I’m not sure what percentage overlap headsails people do typically fit to Hanse…)A boat with a bigger overlapping headsail is not necessarily better for light winds. They generally have smaller mainsails than boats designed for blade jibs.
You need to look carefully at the numbers for sail area vs displacement. Also boats that are faster in light winds often have narrower beam at waterline level.
I am not an expert on the Jeanneau 39i but i dont believe these were intended as performance cruisers per se (unlike Sun Fast), just a new generation of cruiser (with different moulding method?) - though nothing wrong with that. But check the numbers vs
I think even without the self tacker most modern Hanses would set only minimally overlapping jibs. Say 105%. Normally this is basically sheeted back to the swept back spreaders.Taking the example of say Hanse, these are fitted with big mains and self-tackers for real ease. They come with Genoa tracks too, so my assumption was (not based on any real expertise!) that if you wanted to improve performance particularly in light airs you would fit a larger Genoa. For the example of the sun odyssey 39i is this however prohibited by the shroud arrangement? Ie this puts me off vs more conventional rigging (although I’m not sure what percentage overlap headsails people do typically fit to Hanse…)
Same on my ten year old Benny Oceanis. 105% with the clew about 2mm off the shrouds when sheeted in hard.I think even without the self tacker most modern Hanses would set only minimally overlapping jibs. Say 105%. Normally this is basically sheeted back to the swept back spreaders.