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Any tricks for getting the last bit of water out of the bilge?

8.1K views 29 replies 21 participants last post by  Bob & Sue  
#1 ·
My boat has two coolers under the aft bench seat, they drain into the bilge. It never is enough water to activate the bilge pump via the float, or even pump it out when I turn on the pump manually. It's probably only a few quarts of water, but it bothers me to know my bilge isn't perfectly dry. Does anybody have any good ideas as to how to get that small amount of water out?
 
#4 ·
Yeah, that last little bit is tough. There will always be a little left since, as you mentioned, the bilge pump can't get all of it.

Can you reach the garboard drain plug while the boat is on your lift? Maybe add a plank so you can get to it? I've seen many lifts with "catwalks" so owners can get around the boat for maintenance while on the lift.

If not, the shop vac is a good idea. You could also just use one of those super absorbent cloths - lay it down there, wring it out, lay it down there - probably would only take a few times. If you had it on a stick/pole, you wouldn't even need to reach down there.

Or, plug the holes in the cooler and as the ice melts, thoughout the day, just use a cup to scoop the water out a few times over the day. At the end of the day, the coolers will be easier to dry than your bilge.
 
#5 ·
Another vote for the shop vac. I keep a cheap Home Depot "bucket head" shop vac on the boat to deal with just that problem. Also comes in handy to clear thru hulls and such as well.
 
#6 ·
I figured the shop vac was the best solution. Looks like the local Home Depot has a cheapo one in stock for $30, or a cordless one for about $100. That's not a problem, but to me going to Home Depot is like going to Costco. Seems like my "minimum purchase" always ends up being a few hundred bucks. I always find SOMETHING I can't live without! Besides, today is May 6th and I haven't spent a penny on boat stuff this month..........I'm overdue!
 
#8 ·
another vote for shop vac. we carry one all the time

we have a dewalt 20 volt that takes dewalt portable tool battery. will plug into 110 or operate on battery.

a little more pricy that conventional but very handy.

with the two dogs it is also nice to do a quick sweep after beaching ect.
 
#9 ·
We have the same issue.

My wife, last time I was complaining about this issue because I wanted to climb down in the bilge to look around and was going to get wet in the process, pointed out a "solution"......

"Stop complaining!", she said, "there's a drain plug right on the bottom....just pull it and let the water run out!"

(She was pointing to the thru-hull transducer.)

It took me a few seconds to realize she wasn't being her usual blonde self....she actually was yanking my chain! But for a moment there I thought she had reached a new level of "Do you know how a blonde......(fill in the joke blank)" thinking!

Anyway, yea, like everybody said......two words.....

Shop. Vac.
 
#11 ·
The dollar store / dollar tree variety could work too. Also as reported on here, they work great for draining a sink or the bowl of a head that wont flush. Time for a cheap for a replacement after that use however! :)
 
#13 · (Edited)
I changed the pressure relief valve on the hot water tank got some water in some places where it would wick up into the fire or noise material on the plywood. I carry a 1 gal vac on the boat but didn't feel like cleaning it out afterwards. Went to HD purchased one of the drill powered pumps for $8.00 worked great and was able to empty it over the side of the boat.

Just used it to change the oil on a lawn mower worked great.

That Arid Bilge looks like a neat little unit if I needed one.

http://www.homedepot.com/p/Drill-Pump-DRP-1/203449537
 
#18 ·
Well, I am very late posting to this probably already resolved concern! But in case, I add my ditto to those suggesting a small 'shop vac' solution. I keep an approx. 4 gallon brand-x unit on the dock the year round. It will suck and blow. We use it to drain boat bilge if necessary, and the canoe, kayak, pedal boat when rain water catches them upright. It could also be used to pump out the head, but haven't yet. The blower feature is used to raise the jet skis on their hydro hoist lifts and inflate water toys. A good $3.50 spent at a neighbor's yard sale.
 
#20 ·
Just a thought.......the electric motor/brushes of a shop vac are not ignition protected. Is it really a good idea to remove the last bit of water using a shop vac with the possibility of gas fumes being present???? I don't have the answer - just asking.
 
#21 ·
I had the same thought until I thought about it with the engine hatch or hatches open it wouldn't be a problem in my opinion unless you had been leaking fuel into the bilge it's the fumes that go boom not the liquid. How many of us have used cordless drills in the bilge?

Get a utility transfer pump, screw hoses on it and stick it in there. My transfer pump has come in handy several times when it comes to my boat.

http://www.homedepot.com/p/Wayne-12-Volt-Transfer-Pump-PC1/203663854
I noticed in this post the pump is connected with alligator clips same as using a battery jumper just make sure to air the bilge out before running any electrical device down there especially a battery jumper or portable charger the battery fumes go boom too.

Just my thoughts maybe I'm way off.
 
#23 ·
Any issue with transfer pump not priming or losing prime due to the small amount in the bilge. I had this problem on a small Home Depot pump. I use a small B&D shop vac but I have to get down into the bilge with it as it doesn't have enough power to lift the water up to cockpit floor if I place the tank there.
 
#24 ·
I haven't had any issues with it yet.... I don't even know what model the pump is as I picked it up at the Lowes by my Marina a month or two ago while doing some work on the boat.

Seems to prime fine.
 
#25 ·
Big clean up after annual degreasing of engine room is a 5-gallon shop vac, minor clean up, 12volt 1/2 gallon shop vac (harbor freight) and final mop up is a large sponge with a small pale....
 
#30 ·
Saturday I went down to the boat with both my hand held drill driven pump & shop vac on the boat, there was about 1 qt of water in the bilge not even enough to get up to the pump inlet. I tried the drill pump first it picked up most but left some, then I used the shop vac it got almost every drop out of the bilge. Then I dumped some simple green down there to soak while I washed the boat. I then scrubbed the bilge & used the drill pump to get most of the water out it has a 5' hose on 1 end & 5' 3/8" hose on the other just pumped it into a 5 gallon bucket on the dock then used the shop vac to get what was left.

My conclusion:

Hand held pump worked great to most of it out leaves less than a quart in the bilge.
Hand held pump easier to pump most of it out into a bucket on dock.

Shop Vac wins for getting the last bit out but you need to carry it around.
Shop Vac need to be careful keep it upright or ya have another mess to cleanup ( ask me how I know )

Well there's my test bilge & boat both clean for awhile, wait boat needs rinsing we went out yesterday I forgot to rinse it off with saltaway.