Masterclasses > Blue Marlin - Heavy lift semi submersible ship
Q & A - Blue Marlin - Heavy lift semi submersible ship
cos918:
21 litre of water . Should get good lift from that amount of ballast. When I look at it i worked out that you want ballast tank full of water for full submerge about or no more than 30% for normal sailing, and totally empty for lifting to gain extra lift. So at 21 litre tank you could lift about 12kg model . Make sure you ballast tanks are baffled to stop water sloshing a round.
I thought of 1 or 2 main lift tanks and about 4 small trim tanks around the boat best one each corner.
john
boatmadman:
John,
I was working on a lift of about 10kg, and, yes, I also reckoned about 1/4 to 1/3 full for normal running.
Baffling the tanks - yes I am aware of the need for that to minimise the free surface effect.
The reason I am thinking of 4 tanks at the moment is that I am unsure just how much space for pumps i will have, bearing in mind the rear section will have to be for drive units only.
Ian
bigford:
ian
heres a fellow who built one, i think it german or dutch
http://www.wk-e.de/Mighty%20Servant%203.html
and my fav
boatmadman:
Bigford,
Thanks for that, I hadnt seen those pics before.
Ian
Umi_Ryuzuki:
Here's another link that I Keep handy...
http://www.wk-e.de/Mighty%20Servant%203.html
The data I recieved was for the MS-3 and the SS-3.
Are you doing the original hull, or the extended and widened hull for the Blue Marlin?
:)
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