This book contains innovative ideas. In fact, the book creates a revolution in the understanding of ship stability. One of the chief problems in ship stability is the rolling (ship rotation) which was treated in the past as a simple pendulum with damping (or without) under external forces (or without such as waves, wind etc). This common mistake in this approach is rooted in the assumption that the location of the rotating point. Mistakenly, it was assumed that the rotation point is at the

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... enter, an imaginary point which measures the ship's stability. In fact, all the books on stability, that were examined, believe in this mistake. This assumption is wrong! Even for stationary conditions! Furthermore, the rotation point (line) is moving absolutely and relatively to the body (even for quasi--static stability). In other words, the rotation point is floating, depending on the geometry, a fact which was discovered by Bar-Meir. Even with all other mistakes infecting the ship stability, this error can reach to 400\% (would you would like to be in ship build with design of error of 400%?). For any pendulum, the rotation point move relatively to the body, creates two effects: the moment of inertia changes and the pendulum becomes a double pendulum. The double pendulum has two rotating arms attached to each other. The double pendulum has no regular period and exhibits chaotic behavior. Large sums of money were spent on the finding the natural frequency something that does not exist consequence of erroneous belief. This book is the only book (currently) describing these phenomena. This book also describes the physical transfer mechanism from one rotation mode (like roll) to another (like pitch). The book also describes the transfer mechanism from a linear motion to a rotational motion and the reverse. To appreciate these points consider the status of knowledge of ship stability before this book. There was no physical transfer mechanism and it was supposed to be magic that results from wrong governing equat [...]