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Naval Architecture II (NA2) - CM - II

Course Topics

  • Ship Construction
  • Ship building materials
  • Higher tensile steel and associated hazards
  • Advantages of use of aluminum alloys
  • Preservation of Strength of Aluminium super structure
  • Precautions against corrosion where Aluminium is used
  • Examples of usage of castings or forgings
  • Properties of Steel
  • Tensile Strength
  • Ductility
  • Hardness
  • Toughness
  • Yield Point
  • Ultimate tensile stress
  • Modulus of Elasticity
  • StressBrittleFatigue fracture
  • Mild steel
  • Strain
  • StressStrain curve
  • Ship Yard practice
  • General layout of a ship yard
  • Ship's Plans
  • Sheer plan
  • Half breadth plan
  • Body plan
  • Tests for ship building steel
  • Loadline convention
  • Conditions of Assignment of freeboard
  • Margin Line
  • Forward and Aft Perpendicular
  • LBP
  • Sub divisional load line
  • Minimum bow height
  • Factor of sub-division
  • Garboard and sheer strake
  • Multiple load lines
  • Type A and Type B ships
  • Items to be inspected during annual, periodic and renewal surveys
  • Tonnage convention
  • Gross Tonnage
  • Net Tonnage
  • Excluded Spaces
  • Enclosed Spaces
  • Passenger ship subdivision
  • Floodable length
  • Permissible length
  • Sub-Division Load Line
  • Fire integrity of ships
  • Types of bulkheads
  • Standard Fire Test
  • Midship section of ships
  • General Cargo Ship
  • Cellular Container Ship
  • Hatch Cover Less Cellular Container Ship
  • Bulk Carrier
  • Double Hull Oil Tanker
  • Chemical Tanker
  • LPG and LNG Carriers
  • OBO Vessel
  • Ro-Ro Vessel
  • Ship Stability
  • Moments of Inertia Calculations
  • Liquid pressure and centre of pressure
  • Theorem of Parallel Axis
  • Thrust due to liquid pressure
  • Calculation of BML BMT
  • Calculation of KM
  • Stability at Moderate and Large Angles of Heel
  • GZ = GM sin θ for angles of heel up to 10°
  • Wall-sided and Attwood's Formulae
  • BM=iV
  • KM=KB+BM
  • Rolling Period Tests
  • Rolling Period
  • Determine ship stability by Rolling Period Test
  • Rolling Period Test as laid out in Code of Intact Stability
  • Limitations of the Rolling period test
  • Calculation of Approximate GM by means of rolling period tests
  • Inclining Test
  • Determine Light ship KG by Inclining test
  • Precautions to be taken while carrying out Inclining test
  • Calculation of Initial KG given Inclining Test data
  • Recommendation on Intact stability for Passenger and Cargo ships
  • Precautions against capsizing
  • Recommended criteria for Passenger and Cargo ships
  • Stability Information
  • IMO wind criteria
  • Heel while turning
  • Rolling of ships
  • Effect of GM on rolling
  • Effect of draft and displacement on rolling
  • Function of bilge keels
  • Synchronous rolling
  • Parametric rolling
  • Forced Rolling
  • Anti-rolling tanks and stabiliser fins
  • Shear force, bending moments and torsional stress
  • Shear force
  • Bending moments
  • Buoyancy force
  • Diagrams of SF and BM
  • How Wave profile effects SF and BM
  • Maximum permissible Torsional stresses
  • Drawing of SF and BM
  • Flooding of Compartments
  • Margin Line (2)
  • Permeability of a space
  • Calculation of List of a ship after bilging of midship side compartments
  • Effect of flooding on transverse stability
  • Effect of bilging of mid ship compartment
  • Loss of buoyancy of a bilged compartment
  • Effect of Flooding on trim
  • Calculate stability after bilging of end compartment
  • Calculate draft in damaged condition

Ship Construction

Ship Construction

Ship construction today is a complicated compound of art and science. In the great days of sail, vessels were designed and built on the basis of practical experience; ship construction was predominantly a skill. With the rapid growth and development of the physical sciences, beginning in the early 19th century, it was inevitable that hydro-kinetics (the study of fluids in motion), hydrostatics (the study of fluids at rest), and the science of materials and structures should augment the shipbuilder’s skill. The consequence of this was a rapid increase in the size, speed, commercial value, and safety of ships.

 

This course details the constructional features of the ship structure and discusses their upkeep and maintenance during the vessel's lifetime. A ship, well constructed and maintained can operate more than 20-30 years and pays back handsomely the owners for the voyages made. It depends on how the ship is maintained by her crew and the managers in keeping the vessel in good shape through regular maintenance, inspection and surveys.