This is the first course for Naval Architecture students in ‘Hydrostatics and Stability’. This course covers the basic principles of stability, starting from the Archimedes principle and going deeper into the conditions for stability of a vessel.
Study of metacentric height and radius gives an insight into Naval Architectural stability problem. A thorough study of the various weight shiftings which give rise to various forms of heeling are investigated. Conditions of free-surface effect and inclining experiment are studied.
This is followed by stability of the ship at larger angles of heel under various turning moments. The course then discusses about the various conditions of damaged stability, dry docking and launching calculations. A demonstration of the software ‘SPAN’ which performs these hydrostatic calculations will be demonstrated.
Contents: Hull form definition of ships and ocean structures; Deadweight, capacity and tonnage measurement; Numerical Integration, Hydrostatic calculations; Hydrostatic curves, Initial stability, free surface effects, stability at large angles; Intact and damaged stability computations; IMO stability criteria; Damaged stability and its calculation by lost buoyancy and added weight methods; Subdivision and floodable length calculations; Launching and dry docking calculations; Stability of fully submerged body; Stability of multibody systems; Pressure integration technique of computing hydrostatic and stability.

Course Curriculum

 Mod-01 Lec-01 Introduction Details 51:47 Mod-01 Lec-02 Archimedes Principle Details 52:6 Mod-01 Lec-03 Archimedes Principle (Contd.) Details 51:31 Mod-01 Lec-04 Numerical Integration Details 51:44 Mod-01 Lec-05 Problems in Stability – I Details 54:42 Mod-01 Lec-06 Problems in Stability – II Details 54:18 Mod-01 Lec-07 Problems in Stability – III Details 54:43 Mod-01 Lec-08 Problems in Integration Details 56:43 Mod-01 Lec-09 Free Surface Effect Details 54:57 Mod-01 Lec-10 Inclining Experiment Details 54:4 Mod-01 Lec-11 Hydrostatic Curves – I Details 55:16 Mod-01 Lec-12 Hydrostatic Curves – II Details 51:15 Mod-01 Lec-13 Stability Curve Details 56:27 Mod-01 Lec-14 Dynamical Stability – I Details 53:56 Mod-01 Lec-15 Dynamical Stability – II Details 55:14 Mod-01 Lec-16 Healing Moment – I Details 55:50 Mod-01 Lec-17 Healing Moment – II Details 45:40 Mod-01 Lec-18 Healing Moment – III Details 55:2 Mod-01 Lec-19 Dynamical Stability – III Details 53:29 Mod-01 Lec-20 Discussion Details 54:37 Mod-01 Lec-21 Righting Stability – I Details 53:5 Mod-01 Lec-22 Righting Stability – II Details 55:20 Mod-01 Lec-23 Trim Calculations – I Details 53:25 Mod-01 Lec-24 Trim Calculations – II Details 56:1 Mod-01 Lec-25 Trim Stability -I Details 53:45 Mod-01 Lec-26 Trim Stability – II Details 53:45 Mod-01 Lec-27 Dry Docking – I Details 54:20 Mod-01 Lec-28 Dry Docking – II Details 53:47 Mod-01 Lec-29 Bilging – I Details 54:32 Mod-01 Lec-30 Bilging – II Details 53:6 Mod-01 Lec-31 Bilging – III Details 56:30 Mod-01 Lec-32 Bilging – IV Details 55:41 Mod-01 Lec-33 Safety Regulations Details 55:23 Mod-01 Lec-34 Safety Regulations (Contd.) Details 54:58 Mod-01 Lec-35 Safety Regulations ( Contd.) Details 55:42 Mod-01 Lec-36 Ship Stability on Waves Details 53:33 Mod-01 Lec-37 Ship Stability on Waves (Contd.) Details 54:38 Mod-01 Lec-38 Ship Stability on Waves ( Contd.) Details 54:37 Mod-01 Lec-39 Wave Theory Details 56:14 Mod-01 Lec-40 Conclusion Details 53:49

These video tutorials are delivered by IIT Kharagpur as part of NPTEL online courses program.

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