Hello Mr. H.&.M. and other contributors to this issue
Here
we go again. I belief have read my answer to Andrew. Which answers
also some of your questions in this letter.
Coming
first back to weights. The rig as shown will weight in including
sails and rigging 135 kg (Dynema stays). My wishbone gaff rig
weights about 145 kg. This extra weight is in the furler on the
yackstay and the wishbone. We used a similar rig later on our
Pelican. Unfurling the sail about 10 seconds, furling the sail about
20 seconds including setting the inducing setting of the topping
lift.. You can not do it faster with a junk rig. Windward angle
without pinching but some speed decrease 35 degree, optimum with
better speed 40 degree.
By
the way, you need only Aluminum tubes for the mast, which is a big
money saver. The wishbone is a material mix from stainless steel and
Aluminum. When you can weld stainless steel then it is good to do.
When I look at most of the junk rig with all the ropes I have some
taut about running resistance and the mast on the wrong side. If I
would use a junk rig then the simple Jester rig. When you look for
instance on all the different sail and other modification at many of
the junk rigs including the extreme low aspect ratio junk rig on the
ORYX with all the experience Peter has starting with the "Batcher"
I see no reason to use it. This includes the Tyler Aerorig. When I
calculate the time to build all the wishbones it would be a no-no
for my. I am not this patient. Costs is an other factor. Besides a
simple junk rig like on the Jester the are more expensive as any
sloop rig. But at the end it is up to you. The only cheap and good
working wing sail junk was the boat of my friend I was showing the
photo yesterday. The only two photos I have are also in the photo
folder. The boat was so easy to handle that his engine was a big
junk of roost. One day he sailed into the old Denia port at wind
force 7 to 8. His cockpit still closed. At the last moment he opened
the cockpit rounded of to his his mooring and let down the rest of
his sails. He was not a special kind person, but a gifted designer
builder and sailor. He was known on the coast as "Ken on the
rocks". A pity, I made only some sketches of his super simple
wing rips which I lost somehow. General, the forward part was a wing
section with a big flap. So far to the rig. ?So far to the rig.
By the way this is not means to convert you. So to see you are a
junk addict and why not. This was long, next only short answers.
Coming
back to weight. First a strange thing, catamarans need more heavy
ground tackles. For this boat say a Bruce anchor of 20 lb (10kg)and
a 3/5 chain, length 60ft 24 kg. Rope 14mm 100m 18 kg. Also together
52kg The second anchor gear 2/3 also 34 kg together 86 kg.
Rigging
my Wishbone rig mast AL tubes different diameters 140mm lower part
130mm upper part 57 kg + Wishbone gaff complete 6 kg. Furler without
profile 6 kg weight total 95 kg (compare to junk rig, significantly
less). Water 80litres. Katadyne 35 electric 15 kg. Fenders and other
deck gear 28 kg. Engine 56kg. Solar panels+ wind generator Rutland
40 kg. Batteries (up to you if you use lithium of sufficient
capacity about 18 kg)
Total
with some tolerances 392 kg. Boat weight complete incl water = 1795
kg. Useful extra load till waterline
=
1058 kg. Minus the dinghy of course, but I am sure sufficient for
food, clothing, navigation tools chard's books canary etc. will be
sufficient for a route of 4000 mile at a speed of 6 knots = etmal
144 miles = 27,77 days.
With
good planning the probability to run in a severe storm is 7% at the
normal routes around the usual banana belt. When you sail outside
this area the storm probability is 8%, These are meteorological data
from the NOAA. For
a good information of the weather conditions everywhere on the world
is this link very helpful
Now
again and at last. There where many trips made around the world with
small catamarans (or monos). But lets stay with the catamarans. Go to
the web pages of Emmnuel an Maximilien Berque. The where sailing the
Atlantic with a 6m Proa and a 6m catamaran. By the way with the proa
without sextant and chards. It is an attitude. For all the other
arguments from distriputors to this thema, many thanks. All are right
in there views, but it must not be my view or from others. In any
case interesting. One needs a palay an other only a tent.
At
last to this issue, good seamanship is the crucial factor, you can
loosen your boat more easy on a coast as on the sea. Per my own
mistake we where in a winter mistral (December 1990) 8 miles out the
coast. Not far, but it was more safe to went out to the sea. Winter
mistrals are more sever (about force 10 with a temperature of 8
degree, also very tense air). No problem, we streamed in a bend 160m
16mm rope out with a tire. 4m2 storm jib, Full control over the boat
all the time. It was so easy that my wife was even cooking (by the
way, cooking would be impossible on a mono).
Short
back to the KD 860. The plans now sold for many years and I picked up
some ideas which I have adapted in the plans, like the forward
windows, a center/dagger board which folds completely back and can
not damage the boat and the Whisbone rig (not included in the
standard plans set, but can be separate ordered). I think this is
sufficient to close the discussion regarding this issue.
?
Bernd?