passagemaking@lists.trawlering.com

Passagemaking Under Power List

View all threads

Re: [PUP] Objectivity in boating publications (John Marshall)

MT
Mark Tilden
Thu, Sep 17, 2009 5:31 AM

John:

I for one would like to see them push manufacturers to provide
stability data (even if its just modeled data) on any boat that claims
to be suitable for passagemaking.  There are programs that can
estimate it based on detailed manufacturer inputs, and that should be
one of the basis for comparison of boats. But its data that is rarely
available for trawlers, or what data is there is presented in such a
way that its hard to compare.

I completely agree! I raced sailboats across the Pacific several times and
there are very objective (though certainly not foolproof or singularly
definitive) measures, like Limit of Positive Stability (LPS) that were a
requirement for entering open-ocean races like the Pacific Cup. I would
like to see trawler manufacturers specify an LPS or similar measure.

Of course, a trawler isn't like a sailboat with a relatively small cockpit
that can invert to 120+ degrees and shed most of the water quickly and right
itself. Still, some standard, objective measure of ultimate stability would
be very helpful. I got some data on my Selene through the manufacturer, but
it's not published. Because many large trawler manufacturers allow owners to
customize the "standard" numbers are always subject to some variation due to
owner customizations, but at least it would provide a starting point for
comparison.

I think that would be a great "cause" for Passage Maker to take up. I'll
mention it to Bob Woolridge.

Also, your comments about advertisers and critical reviews of boats is right
on. That's why it was sad to see the sister publication of "Practical
Sailor" which was called "Powerboat Reports" go under. I still subscribe to
Practical Sailor, at least in part, because they accept no advertising and
can be counted on for more objective reviews of equipment (and boats--even
if only sailboats).

Capt. Mark Tilden
"Koinonia" Selene 59

John: > I for one would like to see them push manufacturers to provide > stability data (even if its just modeled data) on any boat that claims > to be suitable for passagemaking. There are programs that can > estimate it based on detailed manufacturer inputs, and that should be > one of the basis for comparison of boats. But its data that is rarely > available for trawlers, or what data is there is presented in such a > way that its hard to compare. I completely agree! I raced sailboats across the Pacific several times and there are very objective (though certainly not foolproof or singularly definitive) measures, like Limit of Positive Stability (LPS) that were a *requirement* for entering open-ocean races like the Pacific Cup. I would like to see trawler manufacturers specify an LPS or similar measure. Of course, a trawler isn't like a sailboat with a relatively small cockpit that can invert to 120+ degrees and shed most of the water quickly and right itself. Still, some standard, objective measure of ultimate stability would be very helpful. I got some data on my Selene through the manufacturer, but it's not published. Because many large trawler manufacturers allow owners to customize the "standard" numbers are always subject to some variation due to owner customizations, but at least it would provide a starting point for comparison. I think that would be a great "cause" for Passage Maker to take up. I'll mention it to Bob Woolridge. Also, your comments about advertisers and critical reviews of boats is right on. That's why it was sad to see the sister publication of "Practical Sailor" which was called "Powerboat Reports" go under. I still subscribe to Practical Sailor, at least in part, because they accept no advertising and can be counted on for more objective reviews of equipment (and boats--even if only sailboats). Capt. Mark Tilden "Koinonia" Selene 59