watertight bulkhead

Discussion in 'Boat Design' started by Pammie, May 28, 2018.

  1. Pammie
    Joined: Dec 2015
    Posts: 109
    Likes: 16, Points: 18, Legacy Rep: 10
    Location: Eindhoven, Netherlands

    Pammie Senior Member

    Well... to be honest... In medicine I've seen a lot of discussions that evolve into a trenchwar (eg discussion about statins). Both parties seem to have valid grounds for their opinions (quoted, experience, whatever) but the opinions seem to be as opposed as possible. My experience is that the 'real truth' is somewhere in between. In this discussion I think the 'truth' depends on variables outside of the equation discussed. So I think you are both right as I tried to make clear before.
    To me, Ad Hoc has always been polite and helpfull to clear up my misunderstandings, even pushing me to try to learn something by myself. Of course he is proud of his knowledge. I think all professionals are; at least I plead guilty on that myself. But please gentlemen, climb out of the trenches, stop wasting good electrons, and have an imaginary pint together :cool:, Cheers!!
     
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  2. Ad Hoc
    Joined: Oct 2008
    Posts: 7,789
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    Location: Japan

    Ad Hoc Naval Architect

    For the sake of constantly repeating myself, - no one has said you have!

    Yet you seem to deviate into non-sequiturs all the time - hence the endless meandering.

    Finally, getting the point.

    Thus you see no problems with allowing up to 20, 'crew' or people, as these can be defined as such in ISO, on a boat less than 24m for recreational purposes....and therefore call it, a Recreational boat. Fine, the rules allow that - despite your protestations about rules and those that use them. Funny how you only see it as a one way conversation.

    Anyway.....so what does ISO say about stability...Intact Stability only!....so you have no problems with allowing 20 people onto a small boat that does not require a damage stability check...and that is considered to be safer?!

    Aaahh....now I see your point! - its cheaper! Silly me.

    I recall many years ago a colleague who also thought small boats should be treated differently, didn't see the need for compliance and endless equipment merely to satisfy Class or Flag rules on his small 7m boat. Trouble was, when he was out fishing at night, he didn't have the required lights - why bother it's a small boat, waste of money. The local hydrofoil ran over his boat, killing his son and amputating his arms and legs. Forgive me if i don't listen to subjective polemics of those who think or feel small boats - like some kind of religion - are down to the 'skill' or 'expertise' of the designer and no need for rules as commonsense always prevails.

    I don't come on here for self flagellation or promotion....only to assist those that ask for assistance. It is not about me, it is about the Qs asked by the Op. You can take the advice or not - bothers me not.
    Those that feel threatened by this seem to feel the need to criticise. Go figure.....

    I don't drink beer...can't stand it. But id join you in a nice glass of wine :D
     
    Last edited: Jul 30, 2018
  3. DCockey
    Joined: Oct 2009
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    Location: Midcoast Maine

    DCockey Senior Member

    ISO and EU RCD/CE are not synonymous.

    ISO writes and publishes rules. ISO does not get involved with the use of the rules.

    The ISO rules for small craft are applicable are not limited to recreational craft. 47.080 - Small craft https://www.iso.org/ics/47.080/x/ I'm not aware of anything in the ISO rules restricting their applicability to commercial craft.

    The EU has used ISO small craft rules as the rules for their Recreational Craft Directive. This is probably the most widely known use of the ISO small craft rules. Recreational craft - Growth - European Commission https://ec.europa.eu/growth/single-market/european-standards/harmonised-standards/recreational-craft_en

    Probably because of the use of the ISO rules by the EU RCD there is widespread confusion about the general applicability of the ISO small craft rules. The ISO small craft rules can be applied to commercial craft as well as recreational craft. Whether meeting the ISO small craft rules is sufficient for a particular jurisdiction or satisfactory for a particular customer are different questions.
     
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  4. Pammie
    Joined: Dec 2015
    Posts: 109
    Likes: 16, Points: 18, Legacy Rep: 10
    Location: Eindhoven, Netherlands

    Pammie Senior Member

    @ Ad Hoc: I'll join you for the wine!!
     
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