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Ship Launching in Small Shipyards

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Ship Launching in Small Shipyards Ship Launching in Small Shipyards Edwin Salas Master Thesis presented in partial fulfillment of the requirements for the double degree: “Advanced Master in Naval Architecture” conferred by University of Liege "Master of Sciences in Applied Mechanics, specialization in Hydrodynamics, Energetics and Propulsion” conferred by Ecole Centrale de Nantes developed at West Pomeranian University of Technology, Szczecin in the framework of the “EMSHIP” Erasmus Mundus Master Course in “Integrated Advanced Ship Design” Ref. 159652-1-2009-1-BE-ERA MUNDUS-EMMC Supervisor: Prof. Tadeusz Graczyk, West Pomeranian University of Technology, Szczecin Reviewers: Prof. R. Bronsart,University of Rostock Prof. A. Hage, University of Liège Szczecin, February 2017 2 “EMSHIP” Erasmus Mundus Master Course, period of study September 2015 – February 2017 Declaration of Authorship I declare that this thesis and the work presented in it are my own and has been generated by me as the result of my own original research. Where I have consulted the published work of others, this is always clearly attributed. Where I have quoted from the work of others, the source is always given. With the exception of such quotations, this thesis is entirely my own work. I have acknowledged all main sources of help. Where the thesis is based on work done by myself jointly with others, I have made clear exactly what was done by others and what I have contributed myself. This thesis contains no material that has been submitted previously, in whole or in part, for the award of any other academic degree or diploma. I cede copyright of the thesis in favour of the University of West Pomeranian University of Technology, Szczecin Date: Signature 3 Edwin Salas CONTENTS ABSTRACT ....................................................................................................................................... 6 LIST OF FIGURES .......................................................................................................................... 7 LIST OF TABLES .......................................................................................................................... 10 NOMENCLATURE ........................................................................................................................ 11 C H A P T E R I .............................................................................................................................. 13 1. INTRODUCTION ................................................................................................................... 13 1.1. Objective .......................................................................................................................... 13 1.2. Main idea .......................................................................................................................... 13 2. DESCRIPTION OF SHIPYARD ........................................................................................... 14 3. ACTUAL SITUATION OF SHIPYARD INDUSTRY ........................................................ 16 4. LAUNCHING OF SHIPS ....................................................................................................... 18 5. METHODS FOR SHIP LAUNCHING ................................................................................. 19 5.1. Ship launching under gravity ......................................................................................... 19 5.1.1. Longitudinal ship launching ................................................................................... 19 5.1.2. Transversal ship launching .................................................................................... 20 5.2. Ship launching by surfacing ........................................................................................... 21 5.2.1. DryDock ................................................................................................................... 21 5.2.2. Floating dock ........................................................................................................... 22 5.3. Forced mechanized ship launching ................................................................................ 22 5.3.1. Launching by Cranes .............................................................................................. 23 5.3.2. Travel lifting ............................................................................................................ 23 5.3.3. Ship-lift system ........................................................................................................ 24 5.3.4. Launching of offshore structures .......................................................................... 25 6. TRANSVERSAL FREE SHIP LAUNCHING IN SMALL SHIPYARDS ......................... 27 6.1. Basic principle of transversal ship launching ............................................................... 27 6.2. Types of slipway for Transversal ship launching ......................................................... 27 6.3. Types of transversal ship launching .............................................................................. 28 6.4. Steps for transversal ship launching .............................................................................. 34 7. CASE STUDY .......................................................................................................................... 36 7.1. Description of Finomar Company ................................................................................. 36 8. CHARACTERISTIC OF TRANSVERSAL SHIP LAUNCHING ..................................... 38 Master Thesis developed at West Pomeranian University of Technology, Szczecin 4 8.1. Ship position in the slipway ............................................................................................ 38 8.2. Retention device equipment. .......................................................................................... 38 8.2.1. Mechanical retention device ................................................................................... 39 8.3. Slip truck in rollers ......................................................................................................... 40 8.4. Slipway track. .................................................................................................................. 41 8.5. Characteristics of Slip Track ......................................................................................... 42 8.6. Launch cradle .................................................................................................................. 43 8.7. Girths and wedges ........................................................................................................... 44 8.8. Lashing ............................................................................................................................. 44 8.9. Process of ship launching by slipway ............................................................................. 46 CHAPTER II ..................................................................................................................................... 48 9. PROCESS OF PROJECTING SOLUTIONS FOR SHIP LAUNCHING ......................... 48 10. ANALYSIS OF PROBLEM ............................................................................................... 49 10.1. Ship launching from floating pontoon ....................................................................... 49 10.2. Process of transfer the ship......................................................................................... 49 11. EQUIPMENT FOR TRANSVERSAL LAUNCHING FROM PONTOON. ................. 52 11.1. Pontoon ......................................................................................................................... 52 11.2. Reels .............................................................................................................................. 53 11.3. Slip device..................................................................................................................... 55 12. DESCRIPTION OF PORTABLE SLIPTRACK ............................................................. 57 12.1. Characteristics of portable slip truck ........................................................................ 58 12.2. Slip track ...................................................................................................................... 59 12.3. Slip cradle..................................................................................................................... 61 12.4. Supporting structure ................................................................................................... 62 13. MODELING OF TRANSVERSAL SHIP LAUNCHING ............................................... 65 13.1. Process of ship launching ............................................................................................ 65 13.2. Calculation of transversal ship launching from pontoon ........................................ 67 13.3. Period of transference of ship..................................................................................... 67 13.3.1. First Period .............................................................................................................. 67 13.3.2. Second period........................................................................................................... 68 13.3.3. Third period ............................................................................................................
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