Plum
Well-Known Member
Sorry this post grew like Topsy but -....None of you have mentioned the instance of being aboard and needing MAXIMUM EFFORT to fight the flow. I can assure you it focusses the gluteous maximus. If all you are worried about is insurance - as it seems, you should contact directly... I think you will find that you should have taken sensible precautions, so if absent for an extended period there should be some system installed to cater for reasonable issues. When the fan turns brown however, you will bring every feasible water-moving machine into play, and a whale in the cockpit gets very slow very quickly once the adrenolin fades. I would fit the largest electric pump allowed considering : space in bilge, electrical capacity available and finally, price. The major functional issue appears to be the sensing of water ingress. I know some pumps have a whizz every few minutes and check current load (no water = low amps) but they apparently suck too much power when the boat is unattended if alternate charge is not good/available. Float switches used to be OK when they were mercury whetted but no doubt the safety police have banned them. I use a washing machine level sensor attached by a tube to a plastic bottle cut to a bell shape. I test it when the boat is lifted and the freshwater tanks are drained into the bilge - always works. It also has a buzzer fitted which tells me something is happening down there. Trust me, you shouldn't take this lightly, especially if you don't have the stamina to work a whale at full stroke for a prolonged period.
I too have a washing machine level sensor connected to a half inch hose (no bottle on the end like yours) which triggers at about 5 inches of water depth. The sensor is over 2 feet above the bildge. It is connected to a light and buzzer so giving me early warning of a problem. I switch the electric pump manually and nothing is connected to the battery when i leave the boat. The washing machine level sensor has been very reliable for 2 years now.
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