Then a little bit of something floating around in the bilge goes into
you pump impeller and you have an unpowered sinking boat instead of a
powered sinking one. Great.

Besides, a raw water pump doesn't have a fraction the capacity of this
rig.

--

Roger Long



"Bill Kearney" wrote in message
t...
Its engine driven and clamps round your prop shaft, acting as a
bilge
blower (or rather sucker) untill the water gets up to its intake
:-)

If you're really screwed then shut off the seacock and cut the raw
water
intake hose to the engine. Use that to pull water from the bilge,
through
the engine and out the exhaust manifold.

Then a little bit of something floating around in the bilge goes into
you pump impeller and you have an unpowered sinking boat instead of a
powered sinking one. Great.

If you're screwed, you're screwed. Powered or not.

Besides, a raw water pump doesn't have a fraction the capacity of this
rig.

No argument there. But then nor does it have the constant horsepower drain
that pump incurs.

"Bill Kearney" wrote

If you're screwed, you're screwed. Powered or not.


Not at all (speaking as a long time researcher of marine accidents,
currently, the Titanic).

Running aground to avoid sinking and buy time to control flooding is a
time honored technique that has saved many vessels.

When a vessel becomes severely flooded, loss of stability and capsize
become a primary danger. The ability to control attitude in seas to
diminish the probability of capsize can be a life or death issue.

No argument there. But then nor does it have the constant
horsepower drain
that pump incurs.

The beauty of that system is the very low horsepower drain. When
functioning as a blower, the loss would be insignificant. It isn't
going to be a very effective blower at shaft rpm speeds but it should
keep a constant, very low, flow going.


--

Roger Long

"Bill Kearney" wrote in message
t...
Then a little bit of something floating around in the bilge goes into
you pump impeller and you have an unpowered sinking boat instead of a
powered sinking one. Great.

If you're screwed, you're screwed. Powered or not.

Besides, a raw water pump doesn't have a fraction the capacity of this
rig.

No argument there. But then nor does it have the constant horsepower
drain
that pump incurs.



But if flooding of a major nature is happening, a pump that can keep up with
it is more important than moving, otherwise movement will have a decidedly
downward trend.

Inflatable Bladders?


"Bill Kearney" wrote in message t...
Then a little bit of something floating around in the bilge goes into
you pump impeller and you have an unpowered sinking boat instead of a
powered sinking one. Great.

If you're screwed, you're screwed. Powered or not.

Besides, a raw water pump doesn't have a fraction the capacity of this
rig.

No argument there. But then nor does it have the constant horsepower drain
that pump incurs.