Hi,   Would solitarry have matched it with the leaders?   Doug   Changed "lid" for the 5th time, now very easy entry and exit to cabin - photos later.   How far out would I need the car that takes the jib sheet. if the jib foot is 2.5m long?   --- On Wed, 30/12/09, Rob Denney <harryproa@gmail.com> wrote: From: Rob Denney <harryproa@gmail.com> Subject: Re: [harryproa] Mast bury vs righting moment? To: harryproa@yahoogroups.com.au Date: Wednesday, 30 December, 2009, 12:35   4'/1.2m on 40,000 'lbs/5.5 tonne metres is doable.  Harry is 5 tonne metres and 1.7m, so you are going to need a heavier mast and more beefing up of the lee hull.  Need to talk to the engineer, but for estimating purposes add 10% to the mast weight/cost and an extra layer of 600 db to the lee hull between the beams. Given that harry/Aroha is pretty stable, you could also look at reducing the beam or the weight in the ww hull. rob On Wed, Dec 30, 2009 at 9:03 AM, Gardner Pomper <gardner@networknow. org> wrote:   Hi, In a fairly recent posting, Rob mentioned that the amount of bury you need for the mast isn't really related to the height of the mast, but to the righting moment. Is there a rule of thumb that I can use for checking the feasability of my layout? Current, I am looking at a righting moment of about 40,000 ft-lbs to lift the ww hull. If possible, I would like to do this with a mast bury of only 4'. Is that reasonable? Thanks, - Gardner York, PA