Stability is a difficult concept to define. The idea of a stable character is readily grasped, although it is harder to put into words. The same applies to the notion of a stable ship, as stability is an intangible and complex entity.
Nevertheless, it plays an extremely important role in navigation. If a ship is unstable, there is immediate danger to ship, crew, passengers and the environment. Therefore, stability regulations have been established for all types of ships. Every crewmember of every type of ship is well versed in this domain.
The strength of this book is that stability is made visible, accessible and understandable for everyone through the many photos, figures and drawings contained within. It is highly suitable for all levels of professional training as well as for those involved with pleasure craft.
- How can we cause a floating object to loose its state of equilibrium? Give some examples.
- What will be the effects of becoming unstable on a floating object?
- Give the definition of stability (for a ship).
- Name some of the external forces that can be exerted on a ship.
- An external force is exerted on a stable ship for a short period. How will the ship react?
- Name the three types of stability?
- Show each of these types in a drawing.
- What can be the advantage af a small stability?
- Name some examples of small stability..
- Why can a small stability be safer than a (too) large stability, for certain types of vessels?
- What does the lateral shift of buoyancy mean?
- What causes the constant change in the distribution of buoyancy on a mooving ship?
- How can we influence the stability of a vessel?