I have a 1977 Snowgoose 35 and after about 5000 miles of sailing her in all conditions (UK south coast last year and then down to the Med so far this year) I am rather confused...
Firstly, she has been modified from the original sail plan to have a much larger genoa
- runs about a foot past the mast
with new tracks set behind the mast
and further outboard
than the original coach roof mounted tracks. (As Snowgoose aficionados will know the mast is well set back on these so my genoa
foot is around 6m on a 10.4m boat)
My first problem is this - downwind sail trim is as expected, close hauled trim is as expected but she is very much faster on a reach sheeted in very tight - maybe let out a couple of feet max from the close hauled position for a beam reach and a couple more for a broad reach - but always much much tighter in than any yacht or cat I have seen. The telltales do not always agree with this sheeting position but the speed over ground (checked on 3 gps) is always much better like this - sometimes over a knot
better than when sheeted "by the book"...
Does anyone know why this would be?
I also seem unable to trim the sails
ideally to give my old autopilot
an easier time. I should mention that the boat has in mast furling
and so a tiny (3m foot un roached) main
is a system by a new defunct company called Global who were taken over years ago by the now defunct Cetrek. It is very basic -a hydraulic system which activates the two opposed pistons attached outboard
to the two rudders.
In anything but flat calm it wanders about perhaps 20 degrees either side of course. It is worse under sail than motor
. In big following swells like many autopilots it cannot cope at all really.
The boat seems to be drawn to windward on a reach and then the autopilot compensates, but over compensates, and back and forth we go. It does generally stay to track over time but the constant swinging is bad for speed.
Nothing I seem to do with sail trim helps - with such a huge genoa and tiny main am I on a loosing proposition from the start? I am planning to upgrade the autopilot this winter to the Simrad
system (as we have their NSS8 chartplotter
which can work as the control head) - is this likely to be any better or are their fundamental flaws to overcome first (such as changing the sail plan)?
Any advice form those with experience of these boats would be gratefully received