Ship Stability for Masters and Mates

Dr Bryan Barrass worked as a Ship Draughtsman for 11 years at Swan Hunters Shipyard in Wallsend. In 1963, he then became a Lecturer in Naval Architecture in Sunderland. From 1967 to 1993, he worked at Liverpool John Moores University, lecturing to Maritime Degree students, Masters, Mates, and Marine Engineers. In 1993 he retired from full-time work. He became a visiting Lecturer and has written seven books involving Ship Stability, Ship Design & Ship Performance and Ship Squat & Interaction. His interest in Ship Squat began in April 1972, starting on research for his Ph.D. degree. He has worked with many national & international Port Authorities. They include the PLA, Milford Haven PA, Liverpool PA, Humberside PA, Tyne PA, Truro PA, Newhaven PA, Bordeaux PA, Klaipeda PA, Nantes PA and Hamburg PA. Dr Barrass has supplied Ship Squat and Interaction information to 22 countries worldwide. He has lectured at a great number of UK Universities and has advised many Ship-owners on the above listed Specialist topics.

Linking Ship Stability and Ship Motions: Forces and Moments; Centroids and the centre of gravity; Density and specific gravity; Laws of flotation; Effect of density on draft and displacement; Transverse statical stability; Effect of free surface of liquids on stability; TPC and displacement curves; Form coefficients; Simpson’s Rules for areas and centroids; Second moments of areas; Calculating KB, BM and Metacentric Diagrams; Final KG – twenty reasons for a rise in G; Angle of List; Moments of statical stability; Trim or longitudinal stability; Stability and hydrostatic curves; Increase in draft due to list; Water pressure; Combined list and trim; Calculating the effect of free surface of liquids (FSE); Bilging and permeability; Dynamical stability; Effect of beam and freeboard on stability; Effects of side winds on stability; Icing allowances - effects on trim and stability; Floodable and Permissible length curves; Tabular and assigned Freeboard Marks; Timber ship Freeboard marks; IMO Grain Rules and angle of list; Angle of Loll; True mean draft; The Inclining Experiment or Stability Test; Effect of trim on tank soundings; Drydocking and grounding; Liquid pressure and thrust - Centres of pressure; Ship squat; Interaction; Heel due to turning; Rolling, pitching and heaving motions; Synchronous rolling and Parametric rolling of ships; List due to bilging side compartments; Effect of change of density on draft and trim; List with zero metacentric height; The Deadweight Scale; The Trim and Stability book; The Calibration book – soundings and ullages; Simplified stability information; A trim and stability pro-forma sheet; Linking Ship Stability and Ship Strength: Bending of beams; Bending of ships; Strength curves for ships; Bending and shear stresses