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Old 17 March 2014, 16:44   #11
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Vent 100%
Did mine last year two round white plastic soffit vent (about 1 each).put mine at the bottom of the console which is 4" above the deck. Nice and dry let's battery and fuel vapor fall out so I feel it's much safer.
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Old 17 March 2014, 16:54   #12
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Vent 100% Did mine last year two round white plastic soffit vent (about 1 each).put mine at the bottom of the console which is 4" above the deck. Nice and dry let's battery and fuel vapor fall out so I feel it's much safer.
Ideally you want them above the flooded water line, so in a stuff or if you get flooded in surf onan beach, they're above water. If not, water enters but can't get out.

More importantly, Batteries and electrics should ideally be on a shelf in the console that is above the line too.
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Old 17 March 2014, 16:59   #13
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How do you find the flooded water level without filling your boat with water?
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Old 17 March 2014, 17:10   #14
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How do you find the flooded water level without filling your boat with water?
Difficult really. Easiest way is to fill her on the water though. Shows you where water line is but also how quick water gets in which consoles and jockeys. Plus gives great experience of how to then recover and the time it takes.

Just like a MOB drill IMHO. Trunks down, get her in gear and try to get forward motion. May take a couple of rocks forward and backward.

If your battery is on deck or in a non sealed box, don't do it! Makes a mess, blows battery and ruins cables bitter experience of our old searider with a battery on deck in a box.

A guesstimate without actually doing it. It'll be about mid tube line, depending on the weight of your boat in relation to size of tubes. Small tubes, higher, big tubes, lower down. Also depends if you have your void bungs at front and back in or out. If you have them.
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Old 17 March 2014, 17:33   #15
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Thinking about it would it be the lowest point on the transom, as it would keep filling till it overflowed or would it sink before that?
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Old 17 March 2014, 18:14   #16
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Thinking about it would it be the lowest point on the transom, as it would keep filling till it overflowed or would it sink before that?
It keeps filling roughly until awash with sea but tubes stop it sinking if big enough, which most ribs are. Again, depends on buoyancy vs weight
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Old 18 March 2014, 11:15   #17
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It keeps filling roughly until awash with sea but tubes stop it sinking if big enough, which most ribs are. Again, depends on buoyancy vs weight
Mine is awash, fills basically to the top of the tubes amidships (they are level from there all the way to the transom). You don't wanna know how I know
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Old 18 March 2014, 11:44   #18
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Mine is awash, fills basically to the top of the tubes amidships (they are level from there all the way to the transom). You don't wanna know how I know
Probably do!

We have oversized tubes so we have relatively high buoyancy. Whilst the transom round the engine is awash, the higher sides aren't. Our tubes are pretty much half under water up to mid ships where they start to be clear of it due to high sheer bow.
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Old 19 March 2014, 20:08   #19
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FWIW the OEM battery shelf on my Humber puts the top of the battery just above toob height.

I guess if I have water above there the battery is the least of my worries!
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Old 20 March 2014, 03:40   #20
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FWIW the OEM battery shelf on my Humber puts the top of the battery just above toob height. I guess if I have water above there the battery is the least of my worries!
LOL agreed.

Ours too
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