This book was written specifically to meet the needs of students studying
for their Transport Certificates of Competency for Deck Officers and
Engineering Officers, and STCW equivalent international qualifications.
Several specimen examination questions, together with a marking scheme,
have been kindly supplied by SQA/MCA.
The book will also prove to be extremely useful to Maritime Studies
degree students and serve as a quick and handy reference for Shipboard
Officers, Naval Architects, Ship Designers, Ship Classification Surveyors,
Marine Consultants, Marine Instrument Manufactures, Drydock
Personnel, Ship-owner Superintendents and Cargo-Handling Managers.
Stability can exist when a vessel is rolling or trimming – it is the ability to
remain in stable equilibrium or otherwise. Hence there is a link between
Ship Stability and Ship Motion. Stability can also exist in ship structures via
the strength of the material from which they are built. A material may be
stressed or strained and not return to its initial form, thereby losing its sta-
bility. Hence there is a link between Ship Stability and Ship Strength.
Another type of Ship Stability exists when dealing with course-headings
and course keeping. This is called Directional Stability. Examples of this are
given in Chapter 38, Interaction.