[PUP] Let's design the perfect passagemaker

[John Marshall]

That's a tough one, Scott. It all depends on what you optimize for.

If you want ultimate sea-keeping, range and safety at sea, Steve Dashew has 
already done that in his un-sailboats. He's now selling a 64 foot version 
for a "mere" two million.

But people want all kinds of other things in "trawlers"... like space for 
living and guests. Fancy appliances and living room furniture. The bigger 
production trawlers have all kinds of space for that stuff, but don't have a 
fraction of Dashew's natural stability and sea comfort in a really big sea. 
But every one of those can make long passages, albeit with different 
standards of comfort and safety at sea.

I think you have to start by agreeing on a tight set of design goals, size, 
price and intented usage.

Designing boats is an exercise in tradeoffs. The many companies that make 
custom and production trawlers today aren't stupid, but they might have very 
different design goals than some of us on this list.

Although I have to admit, the production and most of the custom stuff that's 
out there is more the same than different (Dashew's boats being the 
exception).

John Marshall
Serendipity - Nordhavn 55
Sequim Bay, WA


----- Original Message ----- 
From: "Scott E. Bulger" <scottebulger at gmail.com>
To: "'Passagemaking Under Power List'" 
<passagemaking-under-power at lists.samurai.com>
Sent: Wednesday, October 29, 2008 5:23 AM
Subject: [PUP] Let's design the perfect passagemaker


>I wonder if people on the list would be interested in taking on an
> intellectual challenge of designing the "perfect" Passagemaking capable
> Trawler?  We could establish the use scenario and crew requirements then
> propose various systems and options.  We would go week by week and
> argue/discuss these various systems.  At the end we might have a fairly
> compelling compilation of design ideas.  I got this idea reading Dashew's
> site, where he so openly discusses his ideas and what works and doesn't
> work.  Well I haven't seen too much that doesn't work, but I still have a
> fair amount to read.  Anyway if anyone is interested I'd be willing to
> participate.  If necessary we could take it to another forum as well, but
> I'd like to do it here, or even on the T&T list, but it seems if
> Passagemaking is a requirement, this is a better place.
>
>
>
> An example of how this could work is to establish a framework for the 
> topics
> to discuss.  Obviously we have to start with price, crew and distance
> requirements.  Then we could move to basic materials, metal, glass, wood.
> Then on to hull form, power, number of screws etc.  When an idea has been
> fleshed out we could vote and then put the issue aside, but documented as
> the "solution".  Then pull all the "solutions" together in a design
> document?
>
>
>
> Anyway, just a thought.
>
>
>
> Perhaps a good place to start is to talk about price.  Since price would
> dictate a lot, establishing something that the design has to fit into 
> would
> make sense.  I for one would say the boat MUST stay under a million $ usd.
> A case could even be made that it should be below $750 or even $500 but I
> think that might not hit the sweet spot of the buying public.  Now when I
> say $1m I mean that's done, launched, floating with all the electronics 
> and
> ready to leave for a voyage.
>
>
>
> A preliminary list of topics (in order of decision making priority)
>
>
>
> 1.  Price
>
> a.  (might include US built or overseas)
>
> 2.  Crew capacity
>
> 3.  Range Requirements/Use Profile
>
> 4.  Hull Material
>
> 5.  Hull form (oh God, if we decide on a cat I'm done!)
>
> 6.  Power
>
> 7.  Electrical
>
> 8.  Major Ancillary equipment
>
> a.  Bow/Stern Thrusters
>
> b.  Air Cond/ventilation
>
> c.  Refrigeration (Food)
>
> d.  Watermaking capability
>
> 9.  Accessories
>
> a.  Navigation electronics
>
> b.  Other equipment
>
> c.  Tender.
>
>
>
>
>
>
>
> Anyway, I'll have a fair amount of time on my hands over the next month or
> so, so if enough people want to do this, I'd sure like to participate.
>
>
>
> Scott Bulger, Alanui, N40II, Seattle WA
>
> One more day in Reedville, then S to the Norfolk (by Sat)
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