Originally Posted by saratogamanta
... Our Manta
42 does very well windward but we end up motorsailing because where you want to go is too close to the wind
. We run the windward engine
to abate helm
as a boat in the wind
wants to round up.
Bummer. That doesn't sound right.
At about 10 knots true wind speed beating in our catamaran
our boat speed is about the speed that we motor
at by 15 knots TWS our velocity made good to weather
is faster than our motoring speed. In other words, in a decent breeze even if we want to go to someplace directly upwind sailing is faster than motoring and in an "average" (say 12 knot
breeze) there's virtually nothing in it. So, we don't motor-sail upwind much. This on an overloaded (sigh) 42 foot full time cruising cat with heavily used sails
. Folks with shore bases to off load their stuff or nice sails
should do better. Boards make a HUGE difference to both VMG and helm
. If you don't have boards your lee bow ends up as your leeway preventing device which pushes your CLR further forward than ideal. Hence the weather
helm. Fixed keels certainly help but they are substantially less effective than well designed boards. There is a reason that you see boards on all performance multihulls.
Friends that have daggers (Catanas, Dolphins, one offs, etc) have told me the repairs WHEN they run aground can be VERY expensive!! Most end up leaving both daggers down low enough to protect the saildrive and rudder and nothing more and call it a day.
I've run aground my share of times but I try very hard not to do it with the boards down. So far I've been successful at that. For folks who live someplace especially shallow I can see going for bilge
keels (both in mono's and cats). But most places finding 10' of water
is not an epic challenge. I'm not a courageous man, but having invested in charts
and a depth
finder I don't feel that I'm taking absurd chances lowering my dagger-boards when appropriate... I'm thinking your friends may be a wee tad too stressed out about it...