Materials in ShipBuilding

Discussion in 'Materials' started by persianmj, Dec 27, 2010.

  1. persianmj
    Joined: Dec 2010
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    persianmj Shayan Askarzadeh



    Greetings ...


    i wanted to know what are the best materials that are used in shipbuilding and why :?::?::?:
    thanks a lot indeed!
     

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  2. gonzo
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    gonzo Senior Member

    The answer is: "it depends". You have to specify what the ship is for, where it will be used, work life expectancy, etc. All these specifications will end up telling you what materials are the best or cheaper for the job.
     
  3. persianmj
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    persianmj Shayan Askarzadeh

    (bulk carrier, container ship, multipurpose, tankers, LNG ...) = ?
    naval ship = ?

    where it will be used : oceans.
    work of life expectancy : NA

    by the way, thanks a lot for you reply, i thought after 36 views and no reply for this post, no one will ever reply back :p

    Shane.
     
  4. gonzo
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    gonzo Senior Member

    You need to specify which is it:(bulk carrier, container ship, multipurpose, tankers, LNG . etc. Also which ocean and on what seasons. Life expectancy is crucial to the specifications.
     
  5. apex1

    apex1 Guest

    DonĀ“t get impatient!

    It is Christmas in our civilized parts of the world!

    There will come some more replies up, be sure.

    Richard
     
  6. Herman
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    Herman Senior Member

    Come on, Richard. No Christmas in your place either.

    Anyhow, for structures upwards of some 20 meters, steel is the most common material. Especially for commercial vessels.

    Life expectancy: Most commercial vessels are rated for 30 years.
     
  7. micspoko
    Joined: Jul 2010
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    micspoko Senior Member

    Steel is the best material for commercial vessels because is cheaper in building and of course what would later be very important when using the ship is cheaper in repair. Almost all units are constructed of steel and aluminum are used for example for high-speed passenger ferries, or to build a superstructures to lower center of gravity.
     
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  8. apex1

    apex1 Guest

    :cool:How did you know I was in Sri Lanka?:rolleyes:

    Anyway, steal is the cheapest ...
    You must agree.

    Richard
     
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  9. Landlubber
    Joined: Jun 2007
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    Landlubber Senior Member

    persianmj,

    ...observation reveals that basically there is only one material used in shipbuilding now for a century, why, it is cheap to build, minimum qualifications and repairable in every port of the world. Aluminium alloys are only used in high speed craft commercially as of course the weight is a major factor.

    Steel has the strength, the resilience and the availability to be used everywhere.
     
  10. Herman
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    Herman Senior Member

    And steel can be welded in all but the most bizarre circumstances.

    So we have:

    -cheap
    -easy to use
    -easy to store
    -strong
    -resilient
    -can be recycled
    -available everywhere
    -no compatibility issues
    -long lifespan with minimal protection
    -virtually endless life expectancy if well protected
    -can be rolled and forged into bizarre shapes if needed

    It is heavy, however, which is why smaller boats are made from more lightweight materials. (aluminium, polyester, wood)
     

  11. meera
    Joined: May 2012
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    meera New Member

    In general steel is used for hull( mild steel and high tensile steel).
    for superstructures aluminium is used .
    brass or bronze is used for propellor, iron for rudder.
    pvc and different fibers are used for lifeboats.......
    *in detail it depends upon wt kind of ship it is, in which sea it travels,...
     
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