Well, yes, I have been gone for quite some time. It works for me.
best regardsmifl (darn these foreign keyboards)\
wAL
(vbg)
PS. Please don't attack me right now, I have something in the oven.
And actually, if I read your message correctly, you are supporting my
assertion.
you wrote:
Wal, if you are gone any amount of time when they fail you have lost
the boat anyway - any half decently sized bilge pump will kill the
battery. Let's assume a Whale 1000 gallon / hr pump, this will pull 4
amps. The 1000 gallons/hr rating is ideal, like mileage ratings on
cars, so in real life assuming 5 feet of head you will get maybe half
that.
A 1" hose off a fitting at 2 feet below waterline will flood at 12.7
gpm = 762 gallons per hour. Your pump won't keep up with that.
So back to the Defender site, what's a 2000 gph pump draw? The Rule
pump draws 8.4 amps. So now your boat is safe, at a cost of 8.4 amp
hours - how many days does that keep your boat afloat? What if it is a
seacock that fails (higher flooding rate), or a bigger fitting?
(technical reference: Calder, Boatowner's Mechanical And Electrical
Manual 3rd edition, "flooding rates" p 581)
How many on here have a 2000 gph automatic bilge pumps? I consider
automatic bilge pumps to be suitable for nuisance flooding (e.g. rain
down the mast), and one would buy me a bit of time in a crisis, but to
rely on one for long term unattended protection is unrealistic. Far
better to check and eliminate the risks you mention.
Graham Collins
Secret Plans
C&C 35-III #11
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