Abstract
Most fishing vessels are less than 100 m in length between the perpendiculars, for which adherence to the International Maritime Organization maneuverability standards are not mandatory. In the design stage of fishing vessels, maneuverability is estimated using empirical formulas—mainly analytical methods—rather than costly and time-consuming model tests. However, the empirical formula is developed through the process of regression analysis on the model test results from merchant ships’ hull form and applying the same to the fishing vessels’ hull form may result in an estimation error due to the differences in the vessels’ characteristics—e.g., L/B, B/d and Cb·B/L—. In a previous study, the authors of this paper derived a modified empirical formula by adding the hull form parameters of trawl fishing vessels to the existing empirical formula based on those of merchant ships. This study analyzes the validity of the modified empirical formula in depth by applying it to a newly-built training vessel that has the hull form of a trawl fishing vessel. As a result of the study, the estimation results were improved by including the parameters of the hull form of trawl fishing vessels in the empirical formula developed for merchant ships.
Highlights
In 2002, the International Maritime Organization (IMO) approved maneuverability standards that should be applied to all ships that are 100 m in length between the perpendiculars or longer of all rudder and propulsion types, and to chemical tankers, and gas carriers, regardless of their length [1]
The Cb and L/B presented in Figure 2 are the most representative hull form characteristics that have an important correlation in the model test regression analysis process for deriving empirical expressions
The Cb of model trawl fishing vessels resembled that of container ships the most, and their L/B was similar to that of VLCC, ULCC, and car carriers
Summary
In 2002, the International Maritime Organization (IMO) approved maneuverability standards that should be applied to all ships that are 100 m in length between the perpendiculars or longer of all rudder and propulsion types, and to chemical tankers, and gas carriers, regardless of their length [1]. The establishment of these standards accelerated research on accurate estimation of the maneuverability of a ship in the design stage. Since most fishing vessels are less than 100 m in LBP, the IMO maneuverability standards do not apply [1]. Studies performed by Yoshimura [2,3], Dan [4], Lee [5,6,7], and
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