Downflooding angle

Discussion in 'Stability' started by TeddyDiver, May 20, 2008.

  1. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Allthough I don't have to, with my self engineered boatplans to get CE plates on the boat, I still like to do things properly. I've been now calculating STIX and got a question concerning DownFlooding Factor. What kinds of hatch/opening/companionway/door is considered secure or nonsecure in this regard???

    I would also preciate the formulas for Roll Period and Roll Acceleration

    Teddy
     
  2. dskira

    dskira Previous Member

    You will find the down flooding in:
    International Standard ISO 12217-2 reference number ISO 12217-2:2002(E) Small Craft- Stability and Buoyancy Assessment and Categorization
    AnnexB (Page 29) Methode for Calculating Downflooding Angle.
    The ISO booklet is not cheep, the 60 pages booklet cost $180.00 if I remember correctly. must be higher now.
    Good luck
     
  3. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

  4. dskira

    dskira Previous Member

    So you just have just to buy the booklet and I will have the real thing since the CE regulation is ISO standard.
    Good luck
     
  5. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    I'm trying to find out, if references like mentioned here, are included in the booklet or not, and do they contain any information about watertight doors. Nothing against buying books but in this respect I'm trying to find out which standard includes, if any, the information I'm looking for. So far it looks (by the names anyway) like the last one (ISO 11812) could be the one?

    "2 Normative references
    The following normative documents contain provisions which, through reference in this text, constitute provisions of this
    part of ISO 12217. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply.
    However, parties to agreements based on this part of ISO 12217 are encouraged to investigate the possibility of applying
    the most recent editions of the normative documents indicated below. For undated references, the latest edition of the
    normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.
    ISO 2896:2001, Rigid cellular plastics – Determination of water absorption
    ISO 8666:–1), Small craft – Principal data
    ISO 9093-1:1994, Small craft – Seacocks and through-hull fittings – Part 1: Metallic
    ISO 9093-2: –1), Small craft – Seacocks and through-hull fittings – Part 2: Non-metallic
    ISO 9094-1: –1), Small craft – Fire protection – Part 1: Craft with a hull length of up to and including 15 m
    ISO 9094-2: –1), Small craft – Fire protection – Part 2: Craft with a hull length of over 15 m
    ISO 10240:19952), Small craft – Owner’s manual
    ISO 11812:2001, Small craft – Watertight cockpits and quick-draining cockpits"

    So are these in the same book?
     
  6. Guillermo
    Joined: Mar 2005
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    Guillermo Ingeniero Naval

    Teddy,
    ISO norms are sold one by one, not in a book. You just have to buy whatever ones you need, but only those. Regarding cockpits and doors you need:

    ISO 11812:2001, Small craft – Watertight cockpits and quick-draining cockpits
    ISO 12216:2002 Small craft - Windows, portlights, hatches, deadlights and doors - Strength and watertightness requirements

    To keep updated on the RCD you may be interested in registering here: http://rsg.balport.com/

    Please find attached the last available version of the RSG Guidelines, which are of interest to apply the RCD.

    Cheers.
     

    Attached Files:

  7. TeddyDiver
    Joined: Dec 2007
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    Location: Finland/Norway

    TeddyDiver Gollywobbler

    I allready got the 11812 :) Just got to download some more. The RSG file is a good ref. Thanks Guillermo!

    BR Teddy
     

  8. Guest62110524

    Guest62110524 Previous Member

    Teddy
    where did you download, ? for us each euro is 2 dollars?
     
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