Ship Stability Strength and Loading Principles, Second Edition

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Number of Pages:
Published Date:
December 2022
Book Height:
250 mm
Book Width:
170 mm
2 kg
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This is a clear and instructive guide to ship stability for anyone studying to become certified to Mate/Master or Officer of the Watch (OOW) level. It covers the ship stability syllabus requirements for learners studying for STCW 78 as amended for both OFFICER IN CHARGE OF NAVIGATIONAL WATCH REG and CHIEF MATE/MASTER REG. II/2 (UNLIMITED) certificate of competency. It also covers the principles of ship construction, to assist understanding of the nature of ship hull stresses in service. The text is extensively illustrated and supported by worked examples.

Part A of this book covers ship stability for the officer of the watch, providing an overview of the basic principles of ship stability, before introducing the hydrostatic data used to conduct loading calculations. To allow readers to compare certain hull shapes and ensure the preservation of adequate reserve buoyancy at all times, both the principal design coefficients and load line requirements are described. The vertical position of the ship’s centre of gravity (G) and the factors influencing the position of the centre of buoyancy (B) are also discussed. This part also introduces the curve of statical stability, or GZ curve, and discusses the distinction between list and loll. To ensure that list is restricted to an acceptable limit, precautions for suspended weights are examined. Finally, this part examines the importance of trim when loading/discharging and ballasting the ship.

Part B considers ship strength and stresses, covering the classification of shipbuilding materials, ship stresses and structural strength compensation, shear force and bending moment calculations, and corrosion control.

Part C is aimed at mates and masters and provides comprehensive calculation procedures for trim, draught and load lines. It sets out the forces and stresses on a ship during dry-docking and explains the principles and procedures of the inclining experiment. It also looks at calculation of the angle of loll, factors affecting the shape of the curve of statical stability, wind heeling, heel when turning, calculation and assignment of freeboard, icing, bilging, and rolling and dangerous sea wave phenomena. Consideration is given to different types of cargo, such as bulk cargoes, grain and timber deck cargoes. Also included is the draught survey calculation procedure and assessment of compliance of the ship’s loaded condition with MCA and IMO stability criteria.

The publication also includes worked examples for voyage planning and ship load calculations.

Reference is made throughout to procedures for verifying compliance with intact stability criteria and relevant regulations, conventions and codes of practice.


Chapter 1 Basic Principles

Chapter 2 Hydrostatic Data – Draught, Displacement and Tonnes per Centimetre Immersion (TPC)

Chapter 3 Design Coefficients

Chapter 4 Load Lines

Chapter 5 Centre of Gravity (G) and Centre of Buoyancy (B)

5.1 Introduction

5.2 Centre of gravity (G)

5.3 Multiple weight problems

5.4 Centre of buoyancy (B)

Chapter 6 An Introduction to Transverse Statical Stability

Chapter 7 Conditions of Stability

Chapter 8 Initial Transverse Metacentre (M)

Chapter 9 Free Surface Effect

Chapter 10 The Curve of Statical Stability (GZ Curve)

Chapter 11 List

Chapter 12 Curves of Statical Stability for Different Conditions:

Chapter 13 Suspended Weights

Chapter 14 Trim


Chapter 15 Shipbuilding Materials

Chapter 16 Ship Stresses and Structural Strength Compensation

Chapter 17 Shear Force and Bending Moment Calculations

Chapter 18 Corrosion Control


Chapter 19 Change of Trim due to Change of Density and Harder Trim Problems

Chapter 20 Air Draughts

Chapter 21 Dry-Docking

Chapter 22 The Inclining Experiment

Chapter 23 The Wall-sided Formula including Calculating the

Chapter 24 Factors Affecting the Shape of the Curve of

Chapter 25 Assessing Compliance of a Ship’s Loaded Condition with MCA and IMO Stability Criteria

Chapter 26 Bulk Cargoes and the Carriage of Grain

Chapter 27 Calculation and Assignment of Freeboard

Chapter 28 Stability Aspects of Timber Deck Cargoes

Chapter 29 Wind Heeling

Chapter 30 Icing

Chapter 31 Draught Surveys

Chapter 32 Heel when Turning

Chapter 33 Bilging

Chapter 34 Rolling and Dangerous Sea Wave Phenomena

Chapter 35 Voyage Planning Calculations

Chapter 36 Ship Load Calculations

Appendix Ship Stability Data Sheets

Martin Rhodes, the author of this book, is a well-known lecturer on the subject of ship stability. The book is written in an accessible and easy to read style, guiding students through the subject in a logical manner.


Witherbys titles are developed using scripts developed by technical experts that are peer reviewed within work groups. Typically, they seek to improve understanding of the regulations, recommendations and guidelines issued by Industry.

Witherbys staff have significant expertise in the fields of navigation and hazardous cargoes as well as in the presentation of complex subjects in a graphic and easy to understand manner.

Number of Pages:
Published Date:
December 2022
Book Height:
250 mm
Book Width:
170 mm
2 kg

Martin A. Rhodes 

Due March 2023
Available now


  • 5
    An excellent book

    In search for a new book to for our course, this book stood out as the best one