why no in-hull Hypalon autoinflating system to avoid foundering ?
 

Subject: why no in-hull Hypalon autoinflating system to avoid foundering
?
From: Panama

So learn how to anchor and read a chart and you've eliminated 98
problems out of 100.



Add a good high water alarm system to that list and you're at 99.

Capt. Bill

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

Subject: why no in-hull Hypalon autoinflating system to avoid foundering
?
From: Panama

So learn how to anchor and read a chart and you've eliminated 98
problems out of 100.



Add a good high water alarm system to that list and you're at 99.

Capt. Bill

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

I would rather invest in a good plan and equipment to plug a leak or at
least slow the flooding.. Collision matt and DC plugs. Hinged Plywood
patches with "J" bolts, etc.

Back to the inflation system..

Sea Story to follow:
I knew of a fellow whose boat sank in shallow water at the Coronado Is.
(so.of San Diego). It was a small wooden cabin cruiser.. Some friends came
to his assistance and they put a life raft inside the cabin and pulled that
infation lanyard.. Ripped the deck and cabin off the hull.. Seems a boats
deck attachments weren't strong enough to support the weight of the hull and
it's engine, etc. Or it could have been that the volume of the hull interior
was smaller than the the volume of the inflated life raft.

Steve
s/v Good Intentions

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

I would rather invest in a good plan and equipment to plug a leak or at
least slow the flooding.. Collision matt and DC plugs. Hinged Plywood
patches with "J" bolts, etc.

Back to the inflation system..

Sea Story to follow:
I knew of a fellow whose boat sank in shallow water at the Coronado Is.
(so.of San Diego). It was a small wooden cabin cruiser.. Some friends came
to his assistance and they put a life raft inside the cabin and pulled that
infation lanyard.. Ripped the deck and cabin off the hull.. Seems a boats
deck attachments weren't strong enough to support the weight of the hull and
it's engine, etc. Or it could have been that the volume of the hull interior
was smaller than the the volume of the inflated life raft.

Steve
s/v Good Intentions

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

Steve

you gotta get outta the cold. go to SD and see your son. you know you
can't launch a 16' inflatable in a 20' cabin cruiser.



On Sat, 22 Nov 2003 19:25:05 -0800, "Steve" wrote:

I would rather invest in a good plan and equipment to plug a leak or at
least slow the flooding.. Collision matt and DC plugs. Hinged Plywood
patches with "J" bolts, etc.

Back to the inflation system..

Sea Story to follow:
I knew of a fellow whose boat sank in shallow water at the Coronado Is.
(so.of San Diego). It was a small wooden cabin cruiser.. Some friends came
to his assistance and they put a life raft inside the cabin and pulled that
infation lanyard.. Ripped the deck and cabin off the hull.. Seems a boats
deck attachments weren't strong enough to support the weight of the hull and
it's engine, etc. Or it could have been that the volume of the hull interior
was smaller than the the volume of the inflated life raft.

Steve
s/v Good Intentions

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

Steve

you gotta get outta the cold. go to SD and see your son. you know you
can't launch a 16' inflatable in a 20' cabin cruiser.



On Sat, 22 Nov 2003 19:25:05 -0800, "Steve" wrote:

I would rather invest in a good plan and equipment to plug a leak or at
least slow the flooding.. Collision matt and DC plugs. Hinged Plywood
patches with "J" bolts, etc.

Back to the inflation system..

Sea Story to follow:
I knew of a fellow whose boat sank in shallow water at the Coronado Is.
(so.of San Diego). It was a small wooden cabin cruiser.. Some friends came
to his assistance and they put a life raft inside the cabin and pulled that
infation lanyard.. Ripped the deck and cabin off the hull.. Seems a boats
deck attachments weren't strong enough to support the weight of the hull and
it's engine, etc. Or it could have been that the volume of the hull interior
was smaller than the the volume of the inflated life raft.

Steve
s/v Good Intentions

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

I used to have Yachtsaver bags in our old boat so I feel (somewhat)
qualified to reply to all this:

- they are indeed out of business

- they closed about 3 years ago, citing 2 reasons: lack of sales, and CE
tests for Europe that indicated the actual volume of some of their bags was
less than calculated i.e. some of the systems already installed may have
been marginal at best in terms of how much actual flotation provided.

- each of their standard bags was supposed to provide 1 ton of lift. Bags
were about 4" thick x 24" long x 8" high. Pretty easy to find room for 4 of
them in our small 30' cutter. Easy to bolt their mounting straps to
bulkheads that could withstand 1 ton of force. I did the calcs on bulkhead
bearing strength and taping and it was o.k.

- 1 CO2 cylinder was enough for 4 bags.

- Price for the system was $2200 USD +/-. About the same cost as a
liferaft, and you might well save your boat with the system. Pretty good
idea if you ask me.

- for larger boats, they become pretty costly quickly, so a liferaft starts
to sound very appealling in cost, especially if your boat is insured (we
were not)

Our next boat is a 40' catamaran, with 6 different w.t. compartments.
Should be enough to float the boat with any 1 compartment flooded (but I
will do the hydrostatics to check this for myself).


--
Evan Gatehouse

you'll have to rewrite my email address to get to me
ceilydh AT 3web dot net
(fools the spammers)

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

I used to have Yachtsaver bags in our old boat so I feel (somewhat)
qualified to reply to all this:

- they are indeed out of business

- they closed about 3 years ago, citing 2 reasons: lack of sales, and CE
tests for Europe that indicated the actual volume of some of their bags was
less than calculated i.e. some of the systems already installed may have
been marginal at best in terms of how much actual flotation provided.

- each of their standard bags was supposed to provide 1 ton of lift. Bags
were about 4" thick x 24" long x 8" high. Pretty easy to find room for 4 of
them in our small 30' cutter. Easy to bolt their mounting straps to
bulkheads that could withstand 1 ton of force. I did the calcs on bulkhead
bearing strength and taping and it was o.k.

- 1 CO2 cylinder was enough for 4 bags.

- Price for the system was $2200 USD +/-. About the same cost as a
liferaft, and you might well save your boat with the system. Pretty good
idea if you ask me.

- for larger boats, they become pretty costly quickly, so a liferaft starts
to sound very appealling in cost, especially if your boat is insured (we
were not)

Our next boat is a 40' catamaran, with 6 different w.t. compartments.
Should be enough to float the boat with any 1 compartment flooded (but I
will do the hydrostatics to check this for myself).


--
Evan Gatehouse

you'll have to rewrite my email address to get to me
ceilydh AT 3web dot net
(fools the spammers)

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

Out of business
On most boats the hull to deck joint is not strong enough to take the
stress of the bags pushing *up* when submerged. What happens is the
bag deploys and floats to the cabin top ..... as the deck separates
from the hull, the bag escapes into the sea. Then the boat is easier
to sink! .... maybe once could catch such a bag as it erupts through
a broken deck joint ......... nah - thats called a liferaft.

In article , Courtney Thomas
wrote:

Has any such similar system been tried ? What was wrong ?

If available, please point to vendor.

Appreciatively,

why no in-hull Hypalon autoinflating system to avoid foundering ?
 

Out of business
On most boats the hull to deck joint is not strong enough to take the
stress of the bags pushing *up* when submerged. What happens is the
bag deploys and floats to the cabin top ..... as the deck separates
from the hull, the bag escapes into the sea. Then the boat is easier
to sink! .... maybe once could catch such a bag as it erupts through
a broken deck joint ......... nah - thats called a liferaft.

In article , Courtney Thomas
wrote:

Has any such similar system been tried ? What was wrong ?

If available, please point to vendor.

Appreciatively,