Ship Stability for Masters and Mates

Ship Stability for Masters and Mates, 7th Edition

Ship Stability for Masters and Mates, 7th Edition,Bryan Barrass,Capt D R Derrett,ISBN9780080970936






235 X 191

The leading book on ship stability: recommended reading for maritime engineers, seafarers and students

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Key Features

  • Updated throughout to include new shipping industry developments and regulations, with 9 new chapters, the latest ship stability datasheets, and sample exam questions
  • Provides a comprehensive introduction to all aspects of ship stability and ship strength, squat, interaction and trim, materials stresses and forces
  • Concepts are supported with numerous worked examples, clear diagrams, graphs and equations to assist with understanding and application of this critical subject


Ship Stability for Masters and Mates explores all aspects of ship stability and ship strength, squat, and interaction and trim, as well as materials stresses and forces. Organized into 56 chapters, the book looks at the relationship between ship stability and ship motion, with emphasis on group weights in a ship. It also explains how TPCs are calculated for a range of drafts extending beyond the light and loaded drafts, along with form coefficients, including the coefficient of fineness of the waterplane area. The book explains how to perform KB, BM, and KM calculations and make graphics on metacentric diagrams. It considers large-angle stability, the effect of beam and freeboard on stability, and hydrostatic curves and values for vessels that are initially on even keel. The reader is also introduced to free-surface effects of slack tanks with divisional bulkheads, how side winds affect ship stability, and the correlation between freeboard and stability curves. Other chapters focus on timber ship freeboard marks, procedures and calculations for drydocking and stability, and ship squat in open water and in confined channels. The book also includes extracts from the 1998 Merchant Shipping (Load Line) Regulations Number MSN 1752(M). This book is intended for students seeking to obtain Transport Certificates of Competency for Deck Officers and Engineering Officers and STCW equivalent International qualifications, as well as Chief Mates and Officers on Watch (Officers in Charge) on board merchant ships and other maritime personnel, port authorities, marine consultants, nautical study lecturers, and marine superintendents.


Practising marine engineers, naval architects and ship operations personnel; Consulting marine engineers; Marine engineering students on courses in ship stability and related areas; Students on professional certification / vocational courses covering the above.

Bryan Barrass

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.

Affiliations and Expertise

International maritime consultant and lecturer in marine technology at Liverpool John Moores University, Liverpool, UK

View additional works by Bryan Barrass

Capt D R Derrett

Affiliations and Expertise

Formerly Head of Navigation Department at Hull Nautical College, UK

Ship Stability for Masters and Mates, 7th Edition




Part I Linking Ship Stability and Ship Motions

    Chapter 1: Group Weights, Water Draft, Air Draft, and Density

    Chapter 2: Transverse Statical Stability

    Chapter 3: Effect of Decreasing Free Surface on Stability

    Chapter 4: TPC and Displacement Curves

    Chapter 5: Form Coefficients

    Chapter 6: Discussion on LCB Position Relative to Amidships

    Chapter 7: Quadrature ? Simpson’s Rules for Areas and Centroids

    Chapter 8: Quadrature ? Simpson’s Rules for Moments of Inertia

    Chapter 9: Quadrature ? Simpson’s Rules for Centers of Pressure on Transverse Bulkheads

    Chapter 10: KB, BM, and KM Calculations and Graphics on Metacentric Diagrams

    Chapter 11: Final KG Plus 20 Reasons for Rise in KG

    Chapter 12: Angle of List Considerations ? Text, Calculations, and Graphics

    Chapter 13: Angle of Heel ? Effects of Suspended Weights

    Chapter 14: Angle of List Due to Bilging of Side Compartments

    Chapter 15: Heel Due to Turning

    Chapter 16: Angle of Loll

    Chapter 17: Moments of Statical Stability

    Chapter 18: Aspects of Trim ? The Main Factors Involved

    Chapter 19: Trim Calculations ? Changing Conditions of Loading

    Chapter 20: Trim Calculations ? Satisfying Prescribed Requirements for End Drafts

    Chapter 21: Large-Angle Stability Considerations ? GZ and KN Cross Curves of Stability

    Chapter 22: Effects of Beam and Freeboard on Large Angle Stability

    Chapter 23: Dynamical Stability Relating to Statical Stability Curves

   Chapter 24: Changes in Statical Stability Relating to Wave Profiles ? Loss of Quasi-Static Stability

    Chapter 25: Hydrostatic Curves and Values for Vessels Initially on Even Keel

    Chapter 26: Hydrostatic Curves and Values for Vessels Initially Having Trim by the Bow or by the Stern

    Chapter 27: Increase in Draft Due to List

    Chapter 28: Combined List and Trim

    Chapter 29: Calculating Free-Surface Effects of Slack Tanks with Divisional Bulkheads

    Chapter 30: Bilging Effects of Stability ? Permeability Effects

    Chapter 31: Effects of Side Winds on Ship Stability

    Chapter 32: Icing Allowances Plus Effects on Trim and Stability

    Chapter 33: The Sectional Area Curve

    Chapter 34: FL and PL Curves Plus Type A and Type B Vessels

    Chapter 35: Load Lines and Freeboard Marks

    Chapter 36: Timber Ship Freeboard Marks

    Chapter 37: IMO Grain Rules for Safe Carriage of Grain in Bulk

    Chapter 38: True Mean Draft

    Chapter 39: Inclining Experiment (Stability Test) Plus Fluctuations in a Ship’s Lightweight

    Chapter 40: The Calibration Book Plus Soundings and Ullages

    Chapter 41: Drydocking and Stability ? Procedures and Calculations

    Chapter 42: Ship Squat in Open Water and in Confined Channels

    Chapter 43: Turning Circle Diameter (TCD) Values for Vessels in Shallow Waters

    Chapter 44: Interaction Effects, Including Two Case Studies

    Chapter 45: Rolling, Pitching, and Heaving Motions

    Chapter 46: Synchronous Rolling and Parametric Rolling of Ships

    Chapter 47: Effects of Change of Density on a Ship’s Draft and Trim

    Chapter 48: The Deadweight Scale

    Chapter 49: The Trim and Stability Book

    Chapter 50: Simplified Stability Information

    Chapter 51: The Stability Pro-Forma

    Chapter 52: Looking Forward into the Next Decade

Part II Endnotes

    Chapter 53: Draft Surveys

    Chapter 54: Quality Control — Plus the Work of Ship Surveyors

    Chapter 55: Extracts from the 1998 Merchant Shipping (Load Line) Regulations Number MSN 1752(M)

    Chapter 56: Keeping Up to Date

Part III Appendices

    Appendix I: Summary of Stability Formulae

    Appendix II: SQA/MCA 2004 Syllabuses for Masters and Mates

    Appendix III: Specimen Exam Questions with Marking Scheme

    Appendix IV: 100 Revision One-Liners

    Appendix V: How to Pass Exams in Maritime Studies

    Appendix VI: Ship Stability Data Sheets

    Appendix VII: Capsize of the Herald of Free Enterprise — A Journalistic Review


Answers to Exercises

General Particulars of Selected Merchant Ships, Delivered 2007-2011

Nomenclature of Ship Terms


Quotes and reviews

"British specialists in marine technology (Barrass) and navigation (Derrett) provide a resource for students studying for their Transport Certificates of Competency for Deck Officers and Engineering Officers and STCW equivalent international qualification. Primarily for chief mates and officers on watch on board merchant ships, it focuses on linking ship stability with ship motions."--Reference & Research Book News, October 2013
"…the book provides a comprehensive treatment of the subject with full supporting data. It is well written with clear illustrations. It can be thoroughly recommended to those at whom it is aimed and many others associated with the operation of ships will benefit from reading it."--The Naval Architect, January 2013


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