nimbusgb
Well-Known Member
Were any batteries on the boat during the test? Might have been nice to illustrate what 20 or 30 kg's of projectile battery could do when let loose.
Capsize -the full video!
- Thread starter snooks
- Start date
snooks
Well-Known Member
One engine battery was left on which was a sealed lead acid battery, the others had to be removed for environmental reasons. It's all explained in the article, but MDL allowed us to do the test in Ocean Village, on the condition that no harmful liquids (acid, diesel, oil) could leak from the boat. So sadly the house batteries which were normal leisure batteries had to go.
The engine battery was lashed in, and remained in place through both rolls.
Captain Haddock
Well-Known Member
I remember driving home with a standard battery in the boot. The battery came loose and rolled onto its side. The amount of smoke and burning that followed through the car boot carpet into the metal was shocking.
Ever since then I've always gone for the sealed battery.
Andy
muyuu
Well-Known Member
That boat would happily stay turtled in almost any conditions. It's just too beamy to come back up.
Wouldn't be easy to come out of the boat in that situation. Confused, disoriented, having to make your way in the darkness and then escape the mess of cables and sails underwater, with the hull blocking the light outside (provided it didn't happen at night).
Scary.
Wouldn't be easy to come out of the boat in that situation. Confused, disoriented, having to make your way in the darkness and then escape the mess of cables and sails underwater, with the hull blocking the light outside (provided it didn't happen at night).
Scary.
SHUG
Well-Known Member
Yup !! ..and thats without a mast and sails to make it even more stable when inverted.
sighmoon
Well-Known Member
I notice the hatch was shut. It would be interesting to see how much water would be taken on with it open, and would the air pocket keep stop it sinking or would the water keep coming? Would it make a difference if seacocks were open so the air could escape?
Also, with the water pressure against the closed hatch, would it be possible to open the hatch to escape? I wonder how many man-days of air would be trapped inside with you if you couldn't leave?
Probably apart from the conditions that would be needed to turn it turtle in the first place.
Also, with the water pressure against the closed hatch, would it be possible to open the hatch to escape? I wonder how many man-days of air would be trapped inside with you if you couldn't leave?
Probably apart from the conditions that would be needed to turn it turtle in the first place.
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douglas family
New Member
Great video! Great article! really enjoyable crash test series of articles! Well Done!!!
TimG
New Member
I had a similar incident with a very small spillage of acid in the boot of my car and it wrecked a nearly new set of foulies and a pait of wellies. A painful learning experience!
snooks
Well-Known Member
I don't think MDL would have been too happy with a sunk boat in their Marina
I think the force of water coming in would force the air out, think about a empty drinks can pushed under water. Bubbles would come out until the pressure inside is equalised or the air could no longer escape. If you were then to drill two small holes in the top for the galley and heads sink the air would escape letting water in.
So at a guess the air would continue to escape until it reaches the sink inside. Whether this is enough to keep her afloat? It might be because the sinks don't overflow with water when she floats the right way up.
However she probably wouldn't remain stable with such a small air space.
But this is just me guessing what might happen, so don't go trying it and blaming me when you sink
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Honey Trap
Member
Scarey........
and educational. I look forward to reading the magazine article and seeing the experts' conclusions but I have already made my mind up that secure fitting and storage are essential.
This video is a "must see" for boat designers, builders and, dare I say it, buyers of both new and secondhand boats.
Well done to all involved!
Frank
and educational. I look forward to reading the magazine article and seeing the experts' conclusions but I have already made my mind up that secure fitting and storage are essential.
This video is a "must see" for boat designers, builders and, dare I say it, buyers of both new and secondhand boats.
Well done to all involved!
Frank
prv
Well-Known Member
I have a book on buying and fitting out a boat for serious cruising, and every chapter ends with a section titled "Think Inverted" where it suggests all the ways that the things mentioned in that chapter could cause mayhem (or suffer from it) with the boat upside-down. A thought-provoking question to keep coming back to.
Pete
Honey Trap
Member
The Book
Now I'm really curious, what's the name of the book and more importantly is it still in print. sounds like a good bye to me.
In anticipation - thanks
Frank
PS: I'm about to add my e-mail address to my profile.
Now I'm really curious, what's the name of the book and more importantly is it still in print. sounds like a good bye to me.
In anticipation - thanks
Frank
PS: I'm about to add my e-mail address to my profile.
prv
Well-Known Member
The book is "Seaworthy Offshore Sailboat" by John Vigor. It's a while since I've read it, but it doesn't stand out in my mind as exceptional, so don't take this as a heartfelt recommendation. (Or the opposite - I simply don't remember the book in any detail as I was reading a number of similar ones about the same time and they blur together.)
It's on my Kindle, so I guess still in print.
Pete
Ubergeekian
Well-Known Member
As a matter of interest, why didn't a single picture from inside the boat while rolling make it into the magazine? The article was quite interesting, but without showing what actually happened (just four small pics of the aftermath) it all seemed a bit flat, somehow.
snooks
Well-Known Member
It would have been good to get stills from inside during the roll, but for obvious reason they were short of volunteers We could have used remotes, but we'd have to find ways to waterproof the whole lot.
While the video was shot on 1080HD video, the image quality just wasn't good enough for publication.
Given the equipment we had, the budget and the real risk of loosing it all. We decided to get the video footage and make the most of it. Hence the 17 min video.
We could have used remotes, but we'd have to find ways to waterproof the whole lot.While the video was shot on 1080HD video, the image quality just wasn't good enough for publication.
Given the equipment we had, the budget and the real risk of loosing it all. We decided to get the video footage and make the most of it. Hence the 17 min video.