G'day,
I have just loaded a picture of the new Solitarry to the Photos
section. Actually, it is more of a harry with a 15m lee hull. Build
is set to start in July, with one, maybe 2 full time helpers. Launch
in October, maybe. The rendering is not totally accurate as it is
mostly for sponsor gathering.
Anticipated weights (from a discussion at crew.org.nz)
Following are some numbers from the weight spreadsheet for my boat.
Apart from the windward hull, it has all been engineered so I am
confident the component weights are correct. Dave/Squid (potential
short handed sailor..ed) would only need half as much windward hull,
and there is 20-30 kgs to be saved from having a tube mast instead of
the telescoping wing mast rig. A canted tube mast would make the boat
self righting.
Dave may also want to build the hulls from carbon as the small amounts
required are not that big a cost. I have used glass as the Classe 50
(French 15m multihull organisation, Crepes Wahou and co) requires it
and they asked me to enter a harry in next years Route de Rhum (solo
France to Guadeloupe) as they want to maximise their publicity. Bit
full on for me, so I have got an ex mini 650 sailor to charter the
boat, with a smaller windward hull.
Lee hull:
Surface area hull, deck and bulkheads, overlaps and tabbing 40 sq m
Base laminate weight, 3.5 kgs/sq m
Additional stiffening and local beefing up for mast bearings 30 kgs
Paint and bog 10
Lee hull weight: 180 kgs
Windward hull:
Surface area incl deck, bulkheads, overlaps and tabbing 54 sq m
(Dave's is 25 sq m)
Laminate weight 3.5 kgs/sqm
Paint and bog 11
ww hull weight: 200 kgs
Beams 7.5m x 200mm dia tubes, including reinforcing at the hulls 18
kgs each = 36 kgs
Rudders, rudder mounts, tillers and extensions: 20 kgs each = 40 kgs
Mast and boom: ~80 kgs (non telescoping one will be 20-30 less)
Sail, tramp, rigging, cleats and blocks: ~45 kgs
Ready to sail: 581 kgs
Safety gear for solo Transpac which I would like to do next year: 180
kgs Includes spares and nav equipment, not sure how it relates to the
requirements for Cat 1 or Cat 3 in NZ, but seems close to what Mr Wolf
has on his boat, so probably close
Ready to race, ex crew, food and water: 761 kgs
The list does not include:
Daggerboards, cases and the hull strengthening these require.
Harryproas have oversize, liftable rudders, mounted on the beams. They
kick up without damage in a grounding or collision, are much easier to
clean plastic bags and weed off and can be partially or fully lifted
to balance the helm or reduce wetted surface.
Shrouds, stays, forebeams, chainplates, rigging screws, traveller,
winches, jammers, spreaders, dolphin or seagull strikers, jib tracks,
turning blocks, and all the reinforcing and fasteners these items
require.
Jibs, screechers, spinnakers and their sheets and halyards. The rig is
a single 50 sqm mainsail on an 18m tall x 600 chord unstayed wing mast
which telescopes down to 10m. The boom is self vanging and the
controls (halyards, sheet and downhauls) are 3 or 4:1 blocks and
tackles.
Much bog: The boat is built almost entirely from full length fully or
partially glassed flat panels. These are bagged on a table and bent to
shape in simple moulds so the surface is fair and ready for paint. All
joins have radiuses and/or rebates for the joining glass. Little or no
bog and fairing is required. This is a simplification of Derek
Kelsall's KSS technique, made possible because there is no rocker in
the hulls. We built a 15m hull and decks using KSS last year. Bit of a
cock up with the bending and extra glassing so it weighs 200 kgs.
Based on the time this hull took and the refinements to the build
system, I am pretty confident my boat will be built in about 500
hours.
Pulpit (there is no need to go outside the beams), bunk boards and
floors (integral with the structure) and wind instruments (with one
sail you are either overpowered or not).
regards,
Rob
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