More on bilge pump failure.....
Most sailboat owners probably have something like a Rule 300-1500 GPM pump in their boats, some are automatic, some have a float switch, some may be manual switch. I have a Rule 500 Platinum in my H-27, it is computerized and automatic, and again, entirely dependent upon a charged battery. Aside from battery failure, and even if the pump itself failed due to internal breakdown, my question is then just how much water can really gt into a boat under normal conditions at the dock. We probably all have a leak here and there, maybe moreso in a heavy rain, but in the end not much water really fills the bilge. We do have a responsibility to keep watch over our boats. If a hatch blows off in a storm, the normal bilge will pump out the rainwater if the batteries are charged. In an emergency, like a throughull blowout from lightning strike, a normal bilge wouldn't help much anyway. The incoming water would be far greater than the bilge pump could handle or than 6 Rule pumps could handle, that's assuming the entire electrical system hasn't shorted out first. I think having a spare bilge pump aboard would be a good idea, in the box in a drawer should you need it, but an entirely separate second back-up bilge pump system may be overkill and useless anyway in an emergency. A Whale Gusher as a back-up never hurts, but you have to be aboard <G> Just more thoughts........