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Where is your high water alarm mounted?

Old 01-19-2003, 09:24 PM
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Default Where is your high water alarm mounted?

I'm adding a high water alarm. Should I put it in the bilge, if so, how high from bottom? Should I put it close to the helm....??

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Old 01-19-2003, 09:44 PM
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Default Where is your high water alarm mounted?

I'd think you would want it as low as possible above the point where your automatic float switch should turn on your bilge pump, yet high enough that if you should somehow have water in the hull from rain or washing the boat down that it won't turn on when getting the boat up on plane. What did I just write? Does that make sense? What am I doing up this late?
The sooner that alarm comes on, the more time you have to look for the cause of the problem.

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Old 01-19-2003, 11:33 PM
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Default Where is your high water alarm mounted?

I bought a back up alarm at autozone for 10 bucks,mounted it out of the bilge under my gunnel,comes on when the float switch trips the the bilge pump.You could buy a buzzer at radioshack also.Why pay more.JMO

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Old 01-20-2003, 05:21 AM
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Default Where is your high water alarm mounted?

Birdman,

I have 3 bilge pumps wired on float switches, but only two of them also have a manual over ride. The forward one is in the deepest part of the hull, which happens to be about midships. The rear one and the forward ones have the manual over ride switches at the console and each of them has a warning light. If both of those lights are on I have a problem. I don't have any sort of buzzer though. Not likely at all that I ever will, not that it would be a bad thing.

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Old 01-20-2003, 06:57 AM
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Default Where is your high water alarm mounted?

You have to decide what you want to monitor. There are two choices. Mount it so that it will go off when the water level is slightly above the depth at which your automatic float switches are on or mount it at the same level. Do you want to know that you have water in the bilge that is coming in faster than the bilge pumps can remove it (and thus rises above the float switch) or do you just want to know that you have enough water to start the pumps on the float switch? The latter will get you lots more false alarms, presumably, but will also give you mre time to respond.

A good compromise is to get a delay switch that you could rig in line with one of the float switches. This will set off the alarm if the pump has been runninng for more than a minute or two. I believe that a company called Aquallarm sells these, but you could probably rig up your own with some research at Radio Shack to find a suitable relay. This is also good for alerting you to a stuck float switch, which is a common way to get a dead battery without realizing it.
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Old 01-20-2003, 09:45 AM
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Default Where is your high water alarm mounted?

I should've been a bit more discriptive, so I'll add this:

Well.... I have similar setup that time mentioned. I have three bilge pumps. One in bilge at stern with a manual override. One forward, under the floor drain in the galley with a manual override. And one amidships(near the helm), which is really a sump pump with holes in top to handle excess water.

The boat sits almost perfectly parrallel to the water most of the time at rest. However, when we are sleeping in the cabin, the boat dips down a bit at the bow making the bow probably the lowest point.... (I think, kinda hard to tell..).

So, I'm wondering if I should put it amidships, aft or forward? OR, maybe the best thing would be to put either 2 or 3 of the switches all tied together onto one alarm??

As for the height, I have figured out. I have a "bilge channel" which goes the length of the boat, it is about 1' wide and 6" deep. I'll mount it/them just above the channel. The bilge pumps are all on the bottom of that channel, so if the channel fills up and overflows, that's when I want to know about it.

Anyone know of a 2 or 3 peice alarm or do I have to make one?

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Old 01-20-2003, 02:56 PM
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Default Where is your high water alarm mounted?

quote:Originally posted by Thom:
Birdman,

I have 3 bilge pumps wired on float switches, but only two of them also have a manual over ride. The forward one is in the deepest part of the hull, which happens to be about midships. The rear one and the forward ones have the manual over ride switches at the console and each of them has a warning light. If both of those lights are on I have a problem. I don't have any sort of buzzer though. Not likely at all that I ever will, not that it would be a bad thing.

Thom

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(--H. L. Mencken)

The main reason I have a sound alarm is:

I anchor over quite a bit and the sound of the alarm should wake me in time to do something about it,so it lets me sleep a little deeper.I had a friend of mine that woke up to a wet ass and a panic situation.Sometimes I bring rookies along and I need all the alarms I can get on the boat.Everyones needs are different.JMO

Tim,25'SkipjackFB,Diesel
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Old 01-20-2003, 03:26 PM
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Default Where is your high water alarm mounted?

For anchor up situations they should be in the deepest part of the bilge +6" as the limber holes will allow drainage to this spot, and for steaming the best place is next to the rudder 6" above float switch is a good margin as water will run aft.
I would also reccomend that all your auto pumps be integrated to a switch with a led light so you can monitor frequency of pumping.
This configuration has saved my life once in a steaming situation, with time to spare.
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