Currently, the motion of ships and other surface vessels are described (governed) by certain
equations which contain several assumptions. In the same manner, the movement of fish …

The pivot points of surface vessels and submerged bodies are assumed to be at locations of
body centre in research papers. Yet the actual pilots observations show that the rotation …

This work was initiated by users who questioned the validity of the “current” rolling equation
since it did not conform with the observed reality. The difficulty of understanding the added …

Not long ago the zero added mass has been replaced by a none zero constant added mass
in the marine, biological and other fields. A few people realized that both models are simply …

This appraisal presents the current situation in the marine/stability/navigation industry and
current beliefs of most the people in the field excluding this author plus at most a hand full of …

The area of fish locomotion is infested with the prevailing and dominating model which
violates the first and second laws of thermodynamics. The prevailing model avers that von …

This paper deals with a pure horizontal movement of the pivot point and is the second
installment in the series dealing with the rolling motion (and other motions). For the first time …

The fish locomotion has received enormous amount of attention and yet, as writing this
paper, the progress is not satisfactory. On one hand, some progress is done by measuring …

Transition from a free surface flow to pressurized flow through hydraulic jump appears in
several situations, which include the die casting cold chamber process, flow in sewer …

Third, fourth and sixth order ordinary homogeneous differential systems defined over a finite
y range, which generate eigenfunctions φ (y, λi) and eigenvalues λi. The properties of these …