Originally Posted by barnakiel
Actually, they do.
E.g. Rule makes pumps that will deliver some 4000 gph. There is also a similar pump from Johnson.
Quality manual pump will deliver some 30 gpm.
Why not use them?
Thats all been argued out on here before,
But I will give one example,
A 2 inch hole, 36 inches below the water line sucks in 20,000 Litres per hour,
5500 Gallons per hour,
Your batterys are usually down low, Water covers them, You dont have power,
How long has the water been coming in before you noticed it, Broken off thru hull
Your sitting up in a darkened cockpit
sailing across the sea, Cruising at 8 knots, enjoying the night, and the lights go out, Thats your batterys gone, = No pumps,
your cruising across a busy harbour, Your instruments fail, Your getting full of water,
The waters ingress has drowned your batterys, Now you know, There is a hole in your boat, And its two feet deep down there, and its full of floating ****,
Your outside steering
your boat, your not watching the Bilge to see if its taking on water down there,
Is your boat one of those that will sink with a hole in it,
Can you operate a manual pump and fix a hole in your boat at the same time, I cant,
Now what are you going to do, ???????????????????????