文摘
When a ship gets an original list, and a weight is to be vertically shifted (or is to be suspended by a ship’s gear), two approaches for calculating the change in list of the ship have been developed as follows: the first one—for the case when the biggest list of a ship is not more than 5–6°, and the second one—when the biggest list of a ship is not more than 10–12°. These equations have been represented in dimensionless form and reviewed for different specific shapes of a ship’s sides: circle, tumblehome, and wall-sided ones. For wall-sided ships, in order to simplify the procedure of calculating the change in list, a graphical approach and corresponding nomogram has been proposed and designed. The developed method and equations can be also used for calculating the change in list of a ship when heavy-lift cargo is just suspended by the ship’s own gear during heavy-lift operations.