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					                              General Procedure
                              of Shipbuilding



                              Soo-Kwan Oh
                              Technical/ Marketing Manager




For the benefit of business and people
SUMMARY
          1   FROM CONTRACT TO
              DELIVERY
          2   CLASSIFICATION SOCIETY
          3   LARGE CONTAINER VESSEL




                                       2
1
    > From Contract to
    Delivery




                         3
 1    From Contract to Delivery                                                     CONCEPT


Owner Project                          Shipyard



                                                     Contract/ Business Dept.
                                  CONTRACT           Ship Sales Engineering Dept.




                                                     Basic/ Production
                                  DESIGN             Purchasing of Material      Purchasing Dept.
                                                     Owner/ Class Approval


                                                     Hull
                                                     Hull Outfitting
                                                     Machinery Outfitting
                                  PRODUCTION
                                                     Electric Outfitting
                                                     Painting
                                                     Quality Assurance
                                                     Production Control


                                  DELIVERY           A/S


                                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY      4
 1      From Contract to Delivery                                           INITIAL STAGE


     Owner                  Broker
                                                                        Contract/ Business Dept.
                             * Owner               Shipyard
Project Planning           * Shipyard                                   Ship Sales Engineering Dept.


      Purpose                              OFFER
      Route
      Economic                               BRIEF SPEC’



                          Negotiation         Full Spec’/ Class
                       Technical Meeting       Cost Balance




                                               Total Quantity
                        Letter of Intent          Option
                                               Delivery Date



                                              Contract Specification
                          CONTRACT            Contract G/A, Midship, Piping Diagram
                                              Accommodation Plan

                                                    GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   5
 1   From Contract to Delivery                           INITIAL STAGE

 GENERAL ARRANGEMENT




                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   6
 1    From Contract to Delivery                           INITIAL STAGE

 75K MIDSHIP




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   7
 1    From Contract to Delivery                           INITIAL STAGE

 75K MIDSHIP




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   8
 1    From Contract to Delivery                           INITIAL STAGE

 DIAGRAM OUTFIT




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   9
 1    From Contract to Delivery                           INITIAL STAGE

 DIAGRAM OUTFIT




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   10
 1    From Contract to Delivery                           INITIAL STAGE

 DIAGRAM OUTFIT




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   11
 1    From Contract to Delivery                           INITIAL STAGE

 DIAGRAM-MACHINERY




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   12
 1    From Contract to Delivery                           INITIAL STAGE

 DIAGRAM-MACHINERY




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   13
 1    From Contract to Delivery                           INITIAL STAGE

 DIAGRAM-MACHINERY




                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   14
 1   From Contract to Delivery                           INITIAL STAGE

 ACCOMMODATION PLAN




                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   15
 1   From Contract to Delivery                           INITIAL STAGE

 ACCOMMODATION PLAN




                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   16
 1   From Contract to Delivery                           INITIAL STAGE

 ACCOMMODATION PLAN




                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   17
 1    From Contract to Delivery                                                DESIGN STAGE
                      Key Design
 DESIGN STAGE        Production Design

                                  Lines, Propeller
                                  General Arrangement
       Basic Design               Trim & Stability
                                  Loading, etc.

                                  Hull Key Plan           : Midship Section
                                                            Construction Profile & Deck Plan
                                                            Shell Expansion

                                  Structure Drawing       : Cargo Hold
                                                            Engine Room/ Fore Body/ Aft Body
                                                            Stern Frame/ Accommodation

                                  Production Drawing : Shop Drawing/ Cutting Plan
       Hull Design
                                  Structural Analysis     : Static Analysis –Coarse Mesh/ Fine Mesh
                                                            Fatigue Analysis
                                                            Sloshing Analysis
                                                            Bow Impact & Slamming Analysis
                                                            Vibration Analysis

                                  Painting
                                  Purchasing Order        : Steel Plate, Angle etc, Paint
                                                        GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   18
1     From Contract to Delivery                                          DESIGN STAGE

                                  Key Design               : Piping Diagram, Ventilation
                                                             Mooring, Anchoring, Steering
                                                             Life Saving, Fire Fighting
                                                             Traffic Arrangement

Hull Outfitting Design            Production Design        : Pipe Piece, Traffic Piece, etc
                                                             Small Equipment

                                  Accommodation Design : Interior, Piping, Outfitting

                                  Purchasing Order         : Pipe, Valve, Equipment




                                  Key Design           : E/R Piping Diagram,
                                                         Machinery Arrangement, M/E,
                                                         Generator, Boiler, Compressor
Machinery Outfitting
                                  Production Design    : Pipe Piece, Vent Piece, etc.
                                                         Small Equipment

                                  Purchasing Order     : Equipment, Valve, etc.



                                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   19
1    From Contract to Delivery                                        DESIGN STAGE


                                 Key Design          : Automation
                                                       Electrical System
                                                       Navigation Equipment

Electric Outfitting              Production Design   : Cable Piece
                                                       Light Equipment

                                 Purchasing Order    : Switch Board
                                                       Equipment, Cable, Sensor




                                               GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   20
1     From Contract to Delivery                               PRODUCTION STAGE


                             Yard Facility               Production Control
                          Production Control             Production – Hull, Hull Outfitting,
CONDITION
                                                                      Machinery Outfitting, Paint
                           Material Control
                                                         Quality Assurance




HULL PRODUCTION



     Cutting              Sub-Assembly              Assembly                  Each Block




       P.E                 Block                Inspection
                                                                             Pre-Outfitting
                          Painting             Owner/ Class




    Grand P.E              Dock Erection


                                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   21
1      From Contract to Delivery                               PRODUCTION STAGE


OUTFITTING PRODUCTION




         Pre-Outfitting              Outfitting                         Outfitting
           In Block                   In Dock                            In Quay




    PAINTING




                                                                        Cosmetic
         Block Painting            Dock Painting
                                                                        Painting




                                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   22
1      From Contract to Delivery                              DELIVERY & A/S



READY TO SEA TRIAL                           Official Sea Trial
                                          Shipyard, Owner, Class
      Shipyard     Ship owner

                                                       Speed
                                                       Endurance
                                                       Tank Test
                                                       Anchoring/ Mooring
                                                       Rudder, Steering
                                                       Vibration, Noise
                                                       Equipment Operation
                                                       Navigation




    Correction               Delivery
                                          Departure                       A/S
      If Any                  Sign

                                                                       (1 YEAR)




                                        GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   23
2
    > Classification




                       24
2             Classification                                    MAJOR WORK



    SHIP’S SAFETY DURING LIFE TIME



                                 Yard Design
         DRAWING APPROVAL
                                 Maker Design

         INSPECTION DURING BUILDING


         CERTIFICATION

                                         Intermediate
         INSPECTION AFTER DELIVERY
                                         Periodical




                                       GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   25
    CLASS PROCESS

   SHIP NEW CONSTRUCTION :



Commercial        Design review                Follow-up in service


             T0                    T0 + C
       Contract                    Delivery
                                  to Owner




         RFC
        Signed                     Ad 523
                                  signed by
                                     LPO


                                  GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   26
CLASS PROCESS

Design review : basically 4 BV actors


                                        BVN surveyors
 Field surveyor



                                              LPO



    Marine Center
                                          DTM support




                          GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   27
       CLASS PROCESS




                       Design review


  T0                                                                               T0 + C
           LPO core activity : Design review
Contract                                                                          Delivery
           • Design review can start before RFC signed                           to Owner
           ( TAKE CARE - CONTRACT DEFINITION )
           •Completed when Ad 523 + annexes are examined and
           signed
           ( technical green light given to CM for Class certificate )
 RFC                                                                              Ad 523
Signed                                                                           signed by
                                                                                    LPO



                                             GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY    28
       CLASS PROCESS



                        Design review

           LPO core business : Design review against Referential
  T0                                                                                T0 + C
           • Referential : BV Rules / IMO Reg.
Contract                                                                           Delivery
           • LPO Interpretations :
                                                                                  to Owner
              - allowed with BV Rules ( within general conditions)
              - not allowed for IMO Reg.
           • Rules : technical interpretations / protect interest of
           Owner ( final CLIENT )
 RFC       • High technical knowledge frequently requested as                      Ad 523
Signed     Clients may be less educated / powerfull than BV                       signed by
                                                                                     LPO
           • Great risk of uncontrolled move from design review
           activity to Consultancy activity
                                              GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY    29
      CLASS PROCESS




                    Follow-up in service


 T0 + C       LPO activity :                                                 Scrap
 Delivery
              • Design review at any time in case of
to Owner
              conversion
              • Rules : technical interpretations / protect                    or
              interest of Owner
              • Technical support of CMs / Station surveys
              • Several LPOs may be concerned                               Change
 Ad 523                                                                       of
signed by     • Technical documentation processing                           Class
   LPO          ( drawings + calculation sheets )


                                         GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   30
                                             TECHNICAL ASSISTANCE




 Different from Class design review : BV acts as designer in scope of
  Consultancy
 Technical expertise and knowledge is ( must be ) sold to Client
 Highly profitable
 HIGH RISK OF :
      - transfer of Yard know-how
      - confusion on status of conclusions
      - pressure from management
 ALWAYS BE CLEAR ABOUT THE CAP YOU WEAR / THE FORMAT OF
  COMMENTS YOU ARE ALLOWED TO GIVE




                                        GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   31
2           Classification                                       IACS MEMBERS


 MEMBER

     ABS : American Bureau of Shipping

     BV : Bureau Veritas

     CCS : China Classification Society

     DNV : Det Norske Veritas

     GL    : Germanischer Lloyd

     KR    : Korean Register of Shipping

     LR    : Lloyd Register

     NK    : Nippon Kaiji Kyokai

     RINA : Registro Italiano Navale

     RS    : Russian Maritime Register of Shipping

                                           GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   32
2             Classification                                       IACS MEMBERS

     ASSOCIATES


       IRS   : Indian Register of Shipping


     REQUIREMENTS


       - Procedural Requirement

       - Unified Requirements

       - Unified Interpretations

       - Guide Line & Recommendations, etc.


     Web Site

       www.iacs.org.uk

                                             GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   33
3
    > Large Container Vessel




                               34
          1   General : Large Container
SUMMARY       Vessels
          2   Bureau Veritas References
              in Large Container Vessels
          3 BV Hull Expertise
              - Steps of review process
              - Torsion analysis
              - Fatigue analysis
              - Bow flare analysis
          4   BV Lashing Expertise
          5 BV Shaft Alignment Expertise
          6 Parametric Roll Calculation


                                           35
1                GENERAL                 LARGE CONTAINER VESSELS

 The size range for the largest containerships is expected to increase
    significantly in the near future as economies of scale remains the
    dominant operational factor driving efficient transport.


 The Largest containerships currently in service are in the 7000-8000 TEU
    range. Many leading shipyard have developed designs for vessels with
    additional containers rows, tiers and holds. Increase main dimension
    and capacity up to 9000/10000 TEU.


 In the future the carrying capacity of containerships is expected to
    increase to 12000 TEU and above




                                          GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   36
1                          GENERAL                                    LARGE CONTAINER VESSELS

 Fleet development for container ships


                                          Fleet development in '000 teu


     8,000

     7,000

     6,000

     5,000

     4,000

     3,000

     2,000

     1,000

        0
             1990   1991    1992   1993   1994   1995   1996   1997    1998   1999   2000   2001   2002   2003   2004




                                                                      GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY      37
1                GENERAL                      LARGE CONTAINER VESSELS

 Order Books for container ships

                       Order book Feb 2005, number of ships

        250

        200

        150

        100

        50

         0
              <1000   1000-   2000-   3000-   4000-   5000-    6000-    7000-    8000+
                      2000    3000    4000    5000    6000     7000     8000




                                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   38
1                 GENERAL                LARGE CONTAINER VESSELS

 Challenges with the increase of size of containerships


      • Torsion/Warping stress
      • Fatigue
      • Acceleration forces on lashing
      • Engine power
      • Shaft alignment
      • Parametric roll
      • Slamming/Bow impact




                                         GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   39
2       BV REFERENCES                      CONTAINER SHIPS BUILDING

 LAST MAIN REFERENCES

    • HHI
       » 1x5,500 TEU containerships for YANG MING LINE
       » 1x7,800 TEU containership for CMA CGM
       » 10x5,100 TEU containerships for CMA CGM (under building)
       » 2x5,100 TEU containerships for CMA CGM (under building at HSHI)
       » 2x9,200 TEU containerships for CMA CGM (under building)
       » 2x9,200 TEU containerships for CMA CGM (under building at HSHI)
       » 2x8,200 TEU containerships for CMA CGM (under building)
       » 2x8,200 TEU containerships for CMA CGM (under building at HSHI)
       » 1x8,200 TEU containership for YANG MING LINE (under building)



    • DSME
       » 1x6,500 TEU containership for CGM CMA



                                             GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   40
2             BV REFERENCES                   CONTAINER SHIPS BUILDING

   LAST MAIN REFERENCES
      • HHIC
          » 2x1,600 TEU containerships for DELMAS
          » 4x1,600 TEU containerships for VROON
          » 2x4,300 TEU containerships for CMA CGM
          » 3x6,500 TEU containerships for CMA CGM


      • SHI
          » 8 x 5,770 TEU containerships for CMA CGM


      • CSBC
          » 18x2,200 TEU containerships for WAN HAI LINES, DELMAS, CMA CGM,
            YANG MING LINE


      • IMABARI
          » 3x5,500 TEU containerships for COSCO

                                               GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   41
  2             BV REFERENCES                                PROJECT MANAGEMENT

                            < 9,200 TEU CONTAINERSHIP >


 Main Dimensions:

       •   Length btw. PP                 333,44 m
       •   Breadth                        42,8 m
       •   Depth, to upper deck           27,3 m
       •   Draught, summer                14,5 m
       •   Speed                          24,25 kn
       •   Power                          68656 kW


 Key elements: Between half December and the end of March the complete structure has been
   reviewed. This was only possible in close cooperation with the Shipyard. Several meetings at the
   shipyard site, exchanging information and calculation results and discussing the findings, have
   taken place. Two offices of Bureau Veritas, Korea and Paris, have been working around the clock
   in order to make the deadlines of the shipyard.



                                                       GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   42
                          CRITIAL AREA OF LARGE CONTAINER
3   BV HULL EXPERTISE
                                                    SHIPS
       Hatch coamings /
       Superstructures connection
                                        Longitudinal Hatch Coamings

                                                                            Bow Flare
                                                                             impact




                                                                          Bottom
                                                                         Slamming

    Transverse Bulkhead
    connections                                      Cross-deck structures
                        Hatch corners
                                        GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   43
3    BV HULL EXPERTISE                       STEP OF REVIEW PROCESS

 DESIGN REVIEW PROCESS
    » General and subdivision arrangement
    » Mid-ship section : Longitudinal strength and local rule scantlings
    » All sections : Longitudinal strength and local rules scantlings
    » Torsion model : Warping stress estimation all along the vessel
      (to be included in the global stress)
    » Key drawings: primary members calculation (local + global stress)
    » Detail drawings / reinforcement : bracket reinforcement under stack...
    » Bow impact and flat forward bottom area
    » Other calculations: Loading manual strength analysis, Lashing...


 IN PARALLEL TO DESIGN REVIEW PROCESS
    » FEM (VeriSTAR) calculations: double check for design review
    » Fatigue Analysis with Mars/VeriSTAR



                                           GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   44
3     BV HULL EXPERTISE                       TORSION ANALYSIS

MARS - TORCIS ANALYSIS


      »   TORCIS calculation                 2 calculations:
                                             wave 60 degree
                                             wave 120 degree



                                                   Modelisation of
                                                   all cargo holds



                                                 Estimation of shear force
                                                 in cross deck beams



                                               Estimation of warping stress
                                               in side shell , upper-deck
                                               all along the vessel N/mm2



                               GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   45
 3          BV HULL EXPERTISE                  TORSION ANALYSIS

     MARS - TORCIS ANALYSIS




Buckling due to warping                                  Fatigue due to warping
                                                         (L27) 16 years
                                                         (L28) 17 years
                                                         (L29) 13 years
                                                         (L30) 15 years
                                                         (L31) 17 years




                                GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   46
3     BV HULL EXPERTISE                                    TORSION ANALYSIS

 Analyses based on complete ship model




                                                 VeriSTAR is use for

                                                 - Buckling analysis (coarse mesh)


                                                 - Yielding analysis (fine mesh)


                                                 - Fatigue analysis (very fine mesh)
     Full model of 9200 TEU containership




                                            GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   47
  3          BV HULL EXPERTISE                                          TORSION ANALYSIS

     Methodology and steps of a VeriSTAR CSM calculations

            »σX1 =     γs1 σs1 + γw1(Cfvσwv1+Cfhσwh1 + CfΏσΩ )
Quartering sea: Maximize static , vertical bending (50%), horizontal bending (100%) and torsion (100%)




             50% Vertical Bending moment                          Maximum Torsion at fore part


                                                         GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   48
6   3D FEM CALCULATIONS                                 COMPLETE SHIP MODEL
               VERISTAR

 Methodology and steps of a VeriSTAR CSM calculations
     » Coarse mesh modelling : full ship
     » Definition of ballast areas and container loading points
     » Static calculation with lightship weight: loading conditions
          – lightship (checking case)
          – ballast (maximum Bending moment)
          – full load (maximum draft)
          – compare data with loading manual
            (draft,displacement,still water bending moment…)
     » Wave Load calculations: load cases
          – based on selection of design waves (table 5)
          – Head Sea (longitudinal strength)
          – Beam Sea (transverse strength)
          – Quartering sea (torsion strength)
     » Fine mesh analyses
          – based on areas to be analysed (Table 1)
          – Hatch corners, cross deck, connection superstructure,connection girders...

                                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   49
3     BV HULL EXPERTISE                           COMPLETE SHIP MODEL

 Principle Design wave load (see also Table 5)
     » Maximum Vertical Wave Bending Moment in Hogging condition
     » Maximum Wave Torque at vicinity of 0.25L (aft part)
     » Maximum Wave Torque at mid-ship
     » Maximum Wave Torque at vicinity of 0.75L (fore part)
                                                                 Sea keeping calculation
     » Maximum vertical acceleration in inclined conditions
                                                                 Iterative process
     » Maximum vertical acceleration in upright conditions
     » Maximum transverse acceleration


 Wave design load to be associate with loading conditions
     » Ballast, full load
     » Load cases




                                           GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY    50
3     BV HULL EXPERTISE                                        TORSION ANALYSIS

 Stresses and Deformation

                                  Stress in Hatch coaming
                                  Connection superstructure




                      Stress Cross deck


                                                                     Stress Hatch corners
                     Stress Girders



        Buckling in bottom area                       Buckling in bulkhead and bilge area



        Head Sea Condition                                  Quartering sea condition



                                                GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   51
3         BV HULL EXPERTISE                             TORSION ANALYSIS

     Areas to be analysed through fine Mesh models


                                         Examples:

                                         - Hatch Corners
                                         - Connection of hatch coaming
                                           with superstructure
                                         - Transverse Bulkhead
                                         - Support Bulkhead
                                         - Transverse Frame
                                         - Bottom Girders




                                         GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   52
3        BV HULL EXPERTISE                             TORSION ANALYSIS


                              HATCH CORNERS




    Typical stress range in head sea    Typical stress range in oblique sea




                                        GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   53
3     BV HULL EXPERTISE                  TORSION ANALYSIS

 Support Bulkhead




                                              Maximum pressure
                                              in alternate condition
                                              one bay empty




                                             Shear stress
                                             at maximum draft


                          GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   54
3       BV HULL EXPERTISE                  TORSION ANALYSIS

 Connection with
    superstructure




                                                 Stress concentrations
                            GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   55
3         BV HULL EXPERTISE                                         FATIGUE ANALYSIS

     Steps for Fatigue calculation of side shell longitudinals:
          » 1st step : 2D Fatigue Analysis
          » 2nd Step: 3D Fatigue Analysis


     Fatigue calculations for Hatch corners
          » One Step: 3D Fatigue Analysis




                       Cracks in side shell longitudinal due to fatigue

                                                    GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   56
3        BV HULL EXPERTISE                       FATIGUE ANALYSIS

     Side Shell longitudinals


                                              To compare with Mars results

                                              Fatigue
                                              Hot spot 1




                                             Damage Fatigue
                                             Life calculation
                                             to be over 20 years



                                                Fatigue
                                                Hot spot 2




                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   57
3        BV HULL EXPERTISE                                       FATIGUE ANALYSIS

     Hatch Corners


                                                          In order to increase fatigue life,
                                                          compromise between:


                                                          - sufficient reinforcement
                                                          - smooth grinding



                                                          Especially fore part area due to high
                                                          torsional loads




                                                                Hot spot edge of the corner


              Hatch corner in the midship and fore part


                                                 GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY     58
3       BV HULL EXPERTISE                                          FATIGUE ANALYSIS

     Hatch Corners
                                                       In order to increase fatigue life,
                                                       compromise between:


                                                       - sufficient reinforcement
                                                       - smooth grinding




                                                            Smooth Grinding improves
                                                            the fatigue life by 2




                                                            Hot spot edge of the corner



              Hatch corner in the aft part at ER


                                                   GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   59
3          BV HULL EXPERTISE                        SLAMMING/ BOW IMPACT

     Slamming

                                              Maximum impact in forward area:


                                              - Buckling in transverse frames
                                              - Buckling on side shell plate and stiffeners
                                              - Detail connections in forward area




                                                                 Blow flare analysis
VeriSTAR calculations with maximum vertical
acceleration and in sagging condition.




                                               GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   60
 3        BV HULL EXPERTISE                        SLAMMING/ BOW IMPACT

 Buckling in transverse frame at fore part




                                              GENERAL PROCEDURE OF SHIPBUILDING - DD/MM/YY   61
END
         Thank You
            for
      Your Attention !



                         62

				
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