Shipbuilding Process


  1.  
    1
    Design
    With our latest computerized system, a design image is instantly put into a shape in three dimensions. Then, the relevant data is analyzed by this system in order to to streamline the shipbuilding process with thorough production control.

  2.  
    2
    Commencement of Work
    Practical shipbuilding starts with a commencement ceremony making an invocation for the successful construction of the ship.

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    3
    Carrying in / Sorting
    About 60% of the delivery of steel, the main material, to us is made by barge (marine transport). The delivered steel is then immediately sorted on site according to the application or cutting order, using magnetic lifting cranes.

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    4
    Marking
    Marking is a process to mark gauge on steel for cutting.
    “NC Marking” is done automatically by computer whereas “Manual marking” is done by hand.

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    5
    Cutting
    Most of the cutting operation is done using a computerized “NC Cutting” technique. In addition, “Laser cutting” and “Plasma cutting” techniques are applied depending on the thickness of the steel. If the steel is too thick for these techniques, it can be cut by way of “Gas cutting” manually.

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    6
    Bending
    The steel is bent roughly at first by “Press Bending” using a bending mold. Then to finish the process, it is curved precisely using the GYOTETSU technique.

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    7
    Block Assembly
    Processed members/components of a ship are assembled on a block-by-block basis. The assembly work is complicated and requires workers with expert skills and experience.

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    8
    Inspection/ transportation
    After the inspection process is finished, the assembled blocks are transferred to the Main Factory via sea.

     

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    9
    Loading (installation)
    Loading is carried out under the rigorous work planning and construction schedule control, allowing us to efficiently use our 150t king-sized cranes and precision machinery.

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    10
    Launching
    HSB performs the traditional launching ceremony, believing it serves to strengthen the bond among all the people involved with the ship. A huge hull taking water with celebrating ticker-tape in the air is quite a sight.

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    11
    Rigging
    Prior to the rigging operation, a thorough investigation is made to determine the necessary construction process. Then, the rigging operation is carried out by subdivision according to the in-depth process planning based on the initial investigation, without any inefficient activity.

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    12
    Trial cruise at sea
    A trial cruise is carried out at sea to make sure that the ship is working properly.

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    13
    Delivery
    The Delivery of a ship is completed by signing the delivery contract.
  14. TOPIC
    Special Steel Bending Technique — GYOTETSU
    The bow and stem of a ship are made of the steel curved by special steel bending technique called GYOTETSU method, in which the steel is cooled down by water to induce contraction and then curved as required. GYOTETSU is an artisan skill and can be mastered only by well-seasoned craftsmen who have learned the skill by watching and imitating their senior’s example. They say it takes as long as 10 years to become a full-fledged craftsman of this kind.