Damage stability of fishing vessel

Discussion in 'Stability' started by Adarsh Edakkote, Apr 2, 2019.

  1. RAraujo
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    RAraujo Senior Member - Naval Architect

    That is not true... Floodable length calculations were required, at least, as soon as SOLAS 1929 (and there were no computers at the time) - in PNA Vol.1 it is clearly explained how it is done.. I've done it manually, as an exercise, during my NA studies...

    Attached a paper on the subject ()applied to a bulk carrier but can be generalized)...
     

    Attached Files:

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  2. Ad Hoc
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    Ad Hoc Naval Architect

    Yup... me too!
    Tedious.. hated it.. but essential learning, lost on many just pressing buttons these days!
     
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  3. TANSL
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    TANSL Senior Member

    @RAraujo, could you say, if you agree, that I am wrong. Saying "that's not true" sounds a little loud. I may be wrong but I am not lying. But no, I'm not wrong either because the calculation of the floodable lengths is not the same as the current calculations of the stability after damage (that is what is being discussed here). You should know but you clearly don't know. I have never referred to the first of these calculations. I can rightly say that you are wrong and I hope that you correct your offensive statement.
     
  4. RAraujo
    Joined: Apr 2010
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    RAraujo Senior Member - Naval Architect

    You should note that I was answering Umair's question regarding floodable length and not to damage stability...

    From Umair's post #28:

    QUOTE
    Now I want a help to calculate damage stability just floodable lenght curve...
    ...
    secondly how the iteration will work? Because in each iteration my draft values get increases and after 6-8 iteration ship actually sinks
    Can you please share some manual calculation if you have any study related material?
    UNQUOTE

    And I assume you were also talking about the same since you mention:

    QUOTE
    Iterations should include increases and decreases in draft as well as positive and negative trim of the boat. A lower average draft (that is, the draft in Lpp / 2) can mean a greater displacement when changing the trim. Keep that in mind for your calculation procedure.
    I don't think anyone can offer you a sample of a handmade calculation simply because when there were no computers that calculation was not done.
    UNQUOTE

    If that is not the case I apologise...
     
  5. TANSL
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    TANSL Senior Member

    @RAraujo, this is what Umair says and that's what I was talking about.
    You may reply to Umair in terms that better please to you, but you have offensively referred to my comments without reason. No matter what Umair says and what I answer, you cannot say that what I say is not true because I do not try to deceive anyone.
     
  6. Ad Hoc
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    Ad Hoc Naval Architect

    So the discussion is "floodable length" calculation - to establish the damage stability.

    Thus, in this context:

    Please explain why you think damage suitability calculations were not done, pre-computers.

    Thus, is your statemenet correct or incorrect - that damage stability circulations using the floodable length were not done, pre-computers?
     
  7. TANSL
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    TANSL Senior Member

    That doesn't make any sense, therefore i will forget the rest of your sadducee question.
    Your interest, blind eagerness, to discredit me, makes you forget the concepts.
     
  8. Ad Hoc
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    Ad Hoc Naval Architect

    Please explain....and what has my religion got to do with this ???

    And please spare everyone your usual polemic aggressive histrionic replies.
    Because everyone on the forum is feed up with your MO...

    Just facts please.
     
  9. TANSL
    Joined: Sep 2011
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    TANSL Senior Member

    @Ad Hoc, your religion has nothing to do with that. Once again you are wrong or distort what is said to divert attention from your mistakes. A long time ago there were also people who used language brilliantly to convince people that what they said was correct, were the vendors of hair-growing liquids. :D
    This thread, which we have already distorted, deserves to be abandoned at this very moment. If @Umair requires real, practical advice, he can send me a pm and I will gladly assist him, to the best of my knowledge and experience.
     

  10. Ad Hoc
    Joined: Oct 2008
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    Ad Hoc Naval Architect

    noun
    noun: Sadducee; plural noun: Sadducees
    1. a member of a Jewish sect or party of the time of Christ that denied the resurrection of the dead, the existence of spirits, and the obligation of oral tradition, emphasizing acceptance of the written Law alone.
    Funny that... please try and understand the words you use....!!

    So, please answer the question.

    Your statement, no one else's. Is this - correct...or... incorrect.?
     
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