first... generally I like to think about - before skippering a boat
- what security
reserves I will have around. SOLAS
is a clear instrument to get oriented as yacht sailor. So I was educated and that way I like to handle it.
As I love speedy boats, e.g. Trimarans it is a big issue for me to handle collissions on high seas safely, at higher speed. Luckily yet not experienced personally.
Actually I get the chance to proof a sales offer by an owner who has to give up his 40 Foot racing trimaran
because of health
issues. So it looks in a short video
... :-) I just got the plans and equipment
list. It has a maximum speed of 24 knots.
This 3-hull boat
was used mainly for pleasure sailing (mostly coastal areas). Yet it is not equipped to go on high seas safely... but the original plans show optional three bulkheads:
1. Bow (anchor chain hutch) | foreship cabin
2. foreship - saloon/galley + navi) / under cockpit
3. astern rudder
segment + engine
The boat as you can see in the vid is built with a fully open segment of double bed cabin
in the foreship + Saloon/galley/navigation + two single
beds under the cockpit
. Imagine this whole segment under water
after a collission of the main hull
. Not amusing...
Personally I'd prefer to install a bulkhead between foreship and saloon
. Kind of collission door.
For now the whole boat (roughly 4-4.5 tons) is unsinkable by the amas/outriggers, as it was built with composite epoxy-foam and the cross beam section stiffed with cevlar. So after capsizing it still can work
as a floating life raft.
But a smaller collission in the front part of the main hull
shall keep maximum water
outside; bulkheads target at to keep the boat safely manoeverable with all relevant functions.
Yesterday I discussed the given construction with the GL (Germanischer Lloyd) which is one of the leading certification
and classification society worldwide. GLhas merged in 2013 with DNV (Det Norske Veritas) another big classicifcation society. GL still is operating worldwide 80 offices. https://en.wikipedia.org/wiki/Germanischer_Lloyd
Actually there are no safety
rules for privately used yacht boats under the size of 23 metres, thats what I was told by GL. So its up to me to find a constructor and boat builder
for making a bulkhead door.
A modern hydraulic watertight sliding door made of steel
has a weight of up to 400 kilogrammes. Too heavy for a small leight weighted 40 Foot trimaran
Do exist bulkhead doors for yachts made of Carbon ?
Collission at night is the biggest nightmare I have. Not funny
to imagine to crash into a drifting 40 foot ISO sea container (which mostly are unseen and swapping close under surface) at a speed of 22 knots, isnt ?
Or does it look harmless what experienced skipper
Thomas Coville's Maxi-Trimaran Sodebo which lost
its front of the starboard float and central hull nose after a collission during the night shortly after the start of the Route
de Rhum 2014 ?
Similar happened with Loic Fequet’s trimaran Maitre Jacques
(which belongs to Multi 50 class). The bow broke off her starboard float. Not clear if it was a collission or a material defect as it happened a year ago, already.
Dragonfly is building the small Dragonfly 25 with a collission bulkhead in the mainhull... I suppose it makes sense.
What are your experiences ? Any ideas how to handle this situation for a safe sailing on board of speedy multihulls ?