Ships' stability criterion due to turning is not up-to-date and requires amendments. Redesigning the criterion
should be based on scientific research, but there is a lack of accurate procedures and formulas enabling the
calculation of the heeling moment caused by centrifugal forces as a function of time. Measurements of a ships’
heel caused by turning on a model-scale or full-scale may provide a basis for such an analysis. This paper creates such a procedure, including appropriate formulas, leading to the extraction of the heeling moment caused
by centrifugal force from other heeling moments acting on a ship during turning. One model-scale experiment
is described in detail, and the results of the calculations are presented. The paper concludes that it is possible to
extract this moment as a function of time and presents an example of such a calculation.