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Old 03-05-2007
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I do believe my response was rather serious. As this is sailnet.com, not a general boating site, I responded with one possibility among production sailboats. However, it only meets three of your five criteria.

Multihulled sailboats, are also relatively unsinkable, can be affordable, have multiple sources of propulsion and could be self-bailing, but can not self-right.

Etap does market their monohull sailboats as "unsinkable". They are built with sufficient foam between the double hulls to keep them afloat.

Their keel provides them with a significant measure of self-righting capability.

They have multiple means of propulsion—sails or the inboard diesel—which is generally not the case on powerboats.

However, they are not self-bailing. They require bilge pumps, either manual or electric, to empty the boat of any water that has entered.

Nor are the affordable... Etaps, even used, are fairly expensive boats to purchase.

Most of the pilot boats or rescue boats are fairly expensive boats, and fairly narrowly marketed for a specific purpose. I don't see how a small outboard powered boat meets your critieria, unless you are planning on rowing it as an alternate form of propulsion.

Most boats are designed for specific purposes, and certain design requirements, like self-righting, put obvious constraints that are often unrealistic on the boat's design. Given, that people have been designing boats for thousands of years, don't you think that if it were possible to have one boat design that could be affordable, unsinkable, self-bailing, self-righting and powered by multiple, independent sources of propulsion, that someone would have done it by now?

Some of your criteria are contradictory. Having multiple, independent sources of propulsion generally increases the cost, making it less affordable. If something is unsinkable—is there really any need for it to be self-bailing???

Powerboats are often designed specifically for the purposes they will be used for. A keel makes a shallow draft difficult... it also makes it very unlikely plane successfully.
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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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