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Liferaft System....?

Discussion in 'Technical Discussion' started by 84far, Oct 27, 2010.

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  1. 84far

    84far Senior Member

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    Hi,

    Hypothetically, if one was designing a 76m vessel with the appropriate liferafts for guess and crew - Can the liferafts be located behind a door inside the hull or superstructure...? To open and get access to the liferaft, one needs to push a button, or in case of the vessel going down a hydrostatic release on the door and liferaft support brackets can allow the liferaft to deploy...?

    Is this system possible... legal... if not, what is missing? Cheers

    Far
  2. K1W1

    K1W1 Senior Member

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    Hi.

    SOLAS can answer all these questions with the simple words "Float Free"

    I am using a emergency PC ( my normal lappie got stage fright the day before I got going) and am on the road so I can't give you the exact extract at the moment.
  3. Marmot

    Marmot Senior Member

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  4. 'RoundTheHorn

    'RoundTheHorn Senior Member

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  5. 84far

    84far Senior Member

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    K1W1, Marmot, roundthehorn,

    Love the help, just doing some light reading on the "Float Free", sounds like the door in it's self needs a Hydrostatic Release on it. Mine will be a very similar setup to Cakewalk (Great looking boat, love that sheer line).

    Marmot, I can't personally see the liferafts or the doors for them... Is it a similar location as Cakewalk, or behind a false window...? Cheers

    Far
  6. dennismc

    dennismc Senior Member

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    Float free and peace of mind

    Nothing better when you are the Master and you know, your liferafts will float free, no bs ..no fancy clips, catches .or backups...just shove them over or static release.. and there they are, doing what you wanted them to do...maybe the one who suggested those things are ugly, hide them...will be first one in...and full of praise because they actually floated free...SAFETY FIRST...
  7. 84far

    84far Senior Member

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    dennismc,

    I was thinking of under the front deck for a loaction, the only thing that could get in the road would be the cabin if the boat went down nose first. I have heard about liferafts that are exposed (on deck setup) have been ripped off by the sea before....

    But I do see what your saying, keep it simple and safe. Cheers

    Far
  8. Capt J

    Capt J Senior Member

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    I agree totally. I would want my liferafts to float free with nothing in the way. What about mounting them on the middle of the hardtop where they wouldn't be seen from the dock below but still open with nothing in their way?
  9. K1W1

    K1W1 Senior Member

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    Hi,

    The OP is asking about this for a 76 Metre yacht not 76 Ft. There isn't normally much of what you would normally call a hardtop on one of these that isn't already occupied by antennas and Sat Domes.

    A Yacht that size will probably need to carry at least 2 x 25 man rafts each side plus maybe a spare that could be deployed to either side somewhere else.
  10. Capt J

    Capt J Senior Member

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    I am aware of the size. It depends on the design of the yacht, some 76 meter yachts do have a large hardtop, some not. There are plenty of ways to mount 25 men liferafts on a 76 meter yacht without it detracting from looks. I have seen cutouts into the superstructure that conceals the sides of the liferaft, yet it can float freely. If you are involved in the build process, they can pretty much do whatever you want in that aspect for provisions for liferafts.
  11. 84far

    84far Senior Member

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    Not a bad idea really... K1W1 is right about room, there is molded solar panels where your suggesting, and in general, a lack of space. On the side of the superstructure was the plan, and it was just going to be a cut out section where the liferafts where going to be located... but it gave me a sour taste everytime I saw it. So the door idea is what I'm looking at.

    Also, what are peoples thoughts about locating the liferafts on the fore deck - open (no doors), but in a snug cutout... It could be made into bit of a design feature. Cheers

    Far
  12. old.one

    old.one New Member

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  13. 84far

    84far Senior Member

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    old.one, Thank you for the link. It's a great shot of the life rafts installed and ready to go. They remind me of the old war ships dropping depth charges to take out the U-Boats. Cheers

    Far
  14. Marmot

    Marmot Senior Member

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    Rafts are heavy and have to be secured in a way that allows a single person to launch them. A "snug" cutout might make it impossible to remove, much less carry to the rail. They do have to go over the side after all.

    Another consideration for bow mounted rafts is that they have a painter line attached to the yacht structure that both opens the raft and holds it alongside for boarding. There are few enough places to board a raft from a yacht as is and given the freeboard of large yachts in the bow area, tending a painter and providing access for children, injured or "less enabled" passengers or crew is problematic already. I believe this is an issue that neither flag or class, and certainly not stylists, really like to talk about.

    There is more to those rafts than a requirement to carry them or a desire to hide them.
  15. K1W1

    K1W1 Senior Member

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    Hi,

    I would like to see on Cakewalk how the rafts are actually got out of that space, I do not think it would be very easy to get them out on the Portside if she were listing 25 degs to Stbd and it was deadship in the middle of the night with heavy rain and spray.

    I am being a prophet of doom here because simple put most people don't abandon ship in calm weather in daylight.
  16. Marmot

    Marmot Senior Member

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    Hear hear ... the same applies to rescue boats on the bow. This is a gallows waiting to be populated.
  17. 61c40

    61c40 Member

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    Liferaft's

    Has anyone here ever had to abandon ship for real?
  18. K1W1

    K1W1 Senior Member

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    Hi,

    I think you will find that not a lot of the current crop here have, myself included, in the real world a lot have but sadly not all have lived to talk about it.

    Here are a few examples.

    http://www.alertnet.org/thenews/newsdesk/SGE67G0KJ.htm

    http://www.bbc.co.uk/news/world-europe-11507261

    http://www.eyewitnesstohistory.com/titanic.htm

    http://en.wikipedia.org/wiki/MS_Sea_Diamond

    There are a lot more to be found on www.google.com
    Last edited: Nov 12, 2010
  19. Marmot

    Marmot Senior Member

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    Unless Carl is using a Chicago voter's registration style of membership database, not many of the dead ones have an active account.
  20. K1W1

    K1W1 Senior Member

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    Hi,

    I must have misread the original question, I have since modified my reply.