Originally Posted by minaret
What if you are not aboard when catastrophe strikes?
Have thought about that and can think of two likely scenarios. Note, when I'm away from the boat I generally close all the seacocks which should prevent catastrophic failures anyway.
1. Boat is in a marina or mooring
field where there would be employees or neighbors nearby. Alarm
alerts neighbors who check and call me and/or activate manual switch.
2. Boat is in a location with no people around. Secondary emergency
pump activates, battery
drains, boat sinks anyway.
I guess there a third possibility, boat at marina, with shore power
to keep batteries going and no one around to check on the boat. So automatic bilge pumps could keep the boat afloat. But sooner or later the emergency
pumps are going to fail. No bilge pump
I know of is designed for continuous duty for days. So boat sinks at the dock
anyway, just takes a little longer.
Another thought, if it's a really catastrophic leak I don't think even 2 X 4000 gph bilge pumps could keep up for long.
Another thought, in my experience leaks
tend to be very small or very large. Small ones are dealt with by the regular bilge pump, very large ones the emergency pumps can slow down long enough for you plug
the hole but you have to be there to deal with it.
Can remember only one small to medium leak when I was sailing a old wood sloop
that belonged to a friend and the keel bolts were pretty loose. Sailing upwind the boat took on a fair amount of water but not catastrophic. I asked him why he hadn't fixed the problem and he said he just ran the bilge pumps every hour or so.
Anyway, I would welcome your input and comments on my logic. See any dumb assumptions I made that might sink the boat I'm ready to modify the plan.