Cutaway transom or not?
 

On Jun 24, 3:45*pm, Frogwatch wrote:
On Jun 24, 2:37*pm, Wayne.B wrote:

On Wed, 24 Jun 2009 08:16:38 -0700 (PDT), Frogwatch

wrote:
I suspect that open/low transom with a cabin without bridgedeck is a
really bad idea because once you got significant water in the cabin,
you're a goner.

Absolutely right. *

Some sort of sturdy cabin closure is also a good idea, perhaps like
the drop boards in a sailboat companionway, with sliding bolts to hold
them in place. * You might be able to survive a capsize with something
like that.

David Pascoe:

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

Does not like either scuppers or low/no transoms. *He prefers
duplicate battery systems and large multiple bilge pumps.

On a new boat I build, I will probably go with:

Very high splashwell, no scuppers, a removable deck with foam
underneath, largest bilge pumps I can get with oversize hose exiting
as high on transom as possible thru smooth hose and 3 batteries. I
will incorporate a 8" bridge deck I will have to step over to get into
the cabin with removable hatchboards similar to hatchboards on a
sailboat.

On the existing Tolman, I will get the largest bilgepump (This will
give me two pumps) I can exiting thru transom up high. I already have
two batteries. I will install addtl floatation of foam blocks under
the leaning post and between stringers forward of leaning post.
Splashwell is already high but I may increase it by another 1.5".

Cutaway transom or not?
 

On Wed, 24 Jun 2009 12:45:30 -0700 (PDT), Frogwatch
wrote:

On Jun 24, 2:37*pm, Wayne.B wrote:
On Wed, 24 Jun 2009 08:16:38 -0700 (PDT), Frogwatch

wrote:
I suspect that open/low transom with a cabin without bridgedeck is a
really bad idea because once you got significant water in the cabin,
you're a goner.

Absolutely right. *

Some sort of sturdy cabin closure is also a good idea, perhaps like
the drop boards in a sailboat companionway, with sliding bolts to hold
them in place. * You might be able to survive a capsize with something
like that.

David Pascoe:

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

Does not like either scuppers or low/no transoms. He prefers
duplicate battery systems and large multiple bilge pumps.

Pascoe is always an interesting read. Some of his advice is
controversial because it defies conventional wisdom. He has looked
at a lot of boats however, and investigated a lot of sinkings. His
comments about bilge pumps, hoses and fittings seem spot on to me, as
well as his advice to keep the water out of the boat in the first
place. If a boat takes a wave over a low transom for some reason it
can capsize within seconds because it will lose stability.

Cutaway transom or not?
 

On Wed, 24 Jun 2009 18:00:52 -0400, Wayne.B
wrote:

On Wed, 24 Jun 2009 12:45:30 -0700 (PDT), Frogwatch
wrote:

On Jun 24, 2:37*pm, Wayne.B wrote:
On Wed, 24 Jun 2009 08:16:38 -0700 (PDT), Frogwatch

wrote:
I suspect that open/low transom with a cabin without bridgedeck is a
really bad idea because once you got significant water in the cabin,
you're a goner.

Absolutely right. *

Some sort of sturdy cabin closure is also a good idea, perhaps like
the drop boards in a sailboat companionway, with sliding bolts to hold
them in place. * You might be able to survive a capsize with something
like that.

David Pascoe:

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

Does not like either scuppers or low/no transoms. He prefers
duplicate battery systems and large multiple bilge pumps.

Pascoe is always an interesting read. Some of his advice is
controversial because it defies conventional wisdom. He has looked
at a lot of boats however, and investigated a lot of sinkings. His
comments about bilge pumps, hoses and fittings seem spot on to me, as
well as his advice to keep the water out of the boat in the first
place. If a boat takes a wave over a low transom for some reason it
can capsize within seconds because it will lose stability.

You will have noticed that our resident 'expert' hasn't addressed the
purpose behind the dam developed by Parker. Unless it's to keep out
large, dangerous fish, I don't understand the concept.

Cutaway transom or not?
 

On Wed, 24 Jun 2009 18:00:52 -0400, Wayne.B
wrote:

On Wed, 24 Jun 2009 12:45:30 -0700 (PDT), Frogwatch
wrote:

On Jun 24, 2:37*pm, Wayne.B wrote:
On Wed, 24 Jun 2009 08:16:38 -0700 (PDT), Frogwatch

wrote:
I suspect that open/low transom with a cabin without bridgedeck is a
really bad idea because once you got significant water in the cabin,
you're a goner.

Absolutely right. *

Some sort of sturdy cabin closure is also a good idea, perhaps like
the drop boards in a sailboat companionway, with sliding bolts to hold
them in place. * You might be able to survive a capsize with something
like that.

David Pascoe:

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

Does not like either scuppers or low/no transoms. He prefers
duplicate battery systems and large multiple bilge pumps.

Pascoe is always an interesting read. Some of his advice is
controversial because it defies conventional wisdom. He has looked
at a lot of boats however, and investigated a lot of sinkings. His
comments about bilge pumps, hoses and fittings seem spot on to me, as
well as his advice to keep the water out of the boat in the first
place. If a boat takes a wave over a low transom for some reason it
can capsize within seconds because it will lose stability.

Like most talented guys, he tends to fixate on certain things that
defy common sense.

However, when it comes to bilges, fittings, hoses and the mechanical
issues, he's pretty spot on.