Re: [PCW] Stability

MT
Malcolm Tennant
Mon, Feb 27, 2006 11:28 AM

Dennis raises some interesting points.

Dennis had beam seas for most of his trip from New Zealand to the USA. Beam
seas are very uncomfortable in a power cat [as I am sure Dennis would
agree!]. The usual fix in this situation is to angle the boat maybe 12 to 15
degrees to put the waves on the forward, or stern quarter. However, how do
you do this when your destination is thousands of nautical miles away? you
end up many hundreds of nautical miles off course. Maybe tacking like a sail
boat. More distance but maybe more comfort.

The idea of speeding up in steep choppy seas to smooth out the ride is
something we have long advocated for our boats. Numerous owners have
testified to the efficacy of this approach.In fact the owner of one of our
boats, Orren Byrd, christened it the "Hydroglide". Good to see Dennis
further confirming that it certainly works.

I very much agree with Dennis on his "Dashew" power cat. Such a cat would be
a mighty beast. I did argue at the time that Steve should be building a
power cat. We have perhaps made a very, very small step in the general
direction of Dennis' circumnavigator with our Domino design that is costing
a fraction of the cost of the FPB and that will do everything it does, and
more.

Regards,

Malcolm Tennant.

Malcolm Tennant Multihull Design Ltd
PO Box 60513 Titirangi,
Auckland 1007
NEW ZEALAND

ph +64 9 817 1988
fax +64 9 817 6080

e-mail malcolm@tennantdesign.co.nz
www.tennantdesign.co.nz
www.catdesigners.com

Dennis raises some interesting points. Dennis had beam seas for most of his trip from New Zealand to the USA. Beam seas are very uncomfortable in a power cat [as I am sure Dennis would agree!]. The usual fix in this situation is to angle the boat maybe 12 to 15 degrees to put the waves on the forward, or stern quarter. However, how do you do this when your destination is thousands of nautical miles away? you end up many hundreds of nautical miles off course. Maybe tacking like a sail boat. More distance but maybe more comfort. The idea of speeding up in steep choppy seas to smooth out the ride is something we have long advocated for our boats. Numerous owners have testified to the efficacy of this approach.In fact the owner of one of our boats, Orren Byrd, christened it the "Hydroglide". Good to see Dennis further confirming that it certainly works. I very much agree with Dennis on his "Dashew" power cat. Such a cat would be a mighty beast. I did argue at the time that Steve should be building a power cat. We have perhaps made a very, very small step in the general direction of Dennis' circumnavigator with our Domino design that is costing a fraction of the cost of the FPB and that will do everything it does, and more. Regards, Malcolm Tennant. Malcolm Tennant Multihull Design Ltd PO Box 60513 Titirangi, Auckland 1007 NEW ZEALAND ph +64 9 817 1988 fax +64 9 817 6080 e-mail malcolm@tennantdesign.co.nz www.tennantdesign.co.nz www.catdesigners.com