The short answer is no, but the loads are inversely
proportional to the bury. Less bury, higher loads.It is possible to engineer a
rig where the mast has no bury at all and is bonded onto a flange mounted on the
deck. Something like this was done about 20 years ago by Richard Glanville (here
my memory may fail me, so dont quote me on this) If I remember correctly the
monohull "Nissan Skyline" had an unstayed rotating wing mast on a stub
axle which had a flange attached to the deck by rails and could be moved
fore and aft for balance. a lot of carbon rovings were involved, and the flange
was a fairly massive piece of structural laminate, but it crossed
oceans.
Cheers,
Peter
----- Original Message -----From: Phil KeckSent: Thursday, January 25, 2007 10:42 PMSubject: [harryproa] mast bury
On an unstayed rig, is there a rule of thumb on how much bury you need for a given length of mast?I read on this page:that "The minimum "immersion" of mast into cabin is about 1 in 7 ie a 35' high mast needs 5' of bury." Do you really need that much? What's the bury on elementarry?Thanks,
Phil
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