On Tue, 19 Aug 2008 13:42:03 -0700 (PDT),
wrote:

On Aug 19, 4:29 pm, John H. salmonremovebait@gmaildotcom wrote:
On Tue, 19 Aug 2008 15:25:00 -0400, wrote:
On Tue, 19 Aug 2008 15:00:58 -0400, John H.
salmonremovebait@gmaildotcom wrote:

On Tue, 19 Aug 2008 09:58:08 -0400, "Eisboch" wrote:

wrote in message
...
OK, lets try for some real info this time and no insults. Do so-
called offshore boats really have good scuppers? Can anybody provide
a link to a pic of such?
Next, areas below the deck, are they sealed on offshore boats or
accessible via a hatch? How much do said hatches leak? (my sealed
compartments have 6" screw in type access ports).

By that controversial Florida fellow:

http://www.yachtsurvey.com/sinking.htm

Eisboch

It's for sure this part is kind of scary:

"Open Transoms or boats with no transoms have been appearing on the market
with more frequency lately, and many of these are just accidents waiting to
happen. A boat without a transom cannot reasonably be called seaworthy
unless the internal compartments of the hull are made absolutely
watertight. This is almost never the case because the builders never put
absolutely watertight hatches in the decks.

They make a mistake by ignoring the probability that at some point in time
the vessel will encounter circumstances where waves are crashing over the
nonexistent transom, flooding the deck, and thereby endangering the vessel
and its passengers. Builders of such boats don't have the foresight (which
they should have) to consider what would happen if such a boat lost power
while navigating a dangerous inlet, or breaks down while at sea. Under
these circumstances, the lack of a transom becomes very dangerous. Even
large sport fishermen with large, open cockpit scuppers or non-sealing
transom doors have gotten into trouble under such conditions. If you are
the owner of such a boat, you had better think carefully how you use it."

Well, I mean, it's scary if that's what you've got!

Many modern sailboats have an open transom. It's quite safe. In fact,
in some regards, it's considerably safer. Heck, my antique wooden
Flying Dutchman didn't have a closed transom.

Well, that's true. I wonder, though, if the sailboat with the open transoms
are designed somewhat differently than your basic center console 21'er.
--
** Good Day! **

John H

On the other Tolman forum, there is a discussion of cockpit drainage
and somebody calculates that 2 5" diameter ports (two five inch
diameter) would drain a 7'X7' X12" volume in about 52 seconds and this
seems very long.
Pasco and others discuss open transom boats, even with sealed decks as
being dangerous if they are disabled because they can then be filled
from astern. Even if not disabled they can be filled from astern.
So, what is the correct philosophy on cockpit drainage? Do we put our
effort into keeping the water out thus minimizing drainage area or try
to allow the water to drain very fast but make us susceptible to waves
from astern?

I pointed you to two examples of what you should be considering. Pasco
appears to not know exactly what he's talking about. You can roll a
surf rescue boat 360. You can even roll it several times in quick
succession. It will right itself and empty pretty fast. No open
transom, either.