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The data from the BMT formulae, ITTC benchmark data and the Mean Value data have then been used to construct the Four Quadrant hull forces and moments and used to simulate the performance of the ESSO OSAKA. Figures 7 and 8 below present the comparison of the full-scale turning circle and zig-zag manoeurves using these three sets of derivatives.
Fig.7 35 Degree Turning Circle-10 knots
Fig 8 20/20 Zig-Zag-7.8 knots
4.3 Results for the GOLDEN PRINCESS
The linear and non-linear derivatives and added mass terms for the GOLDEN PRINCESS were calculated using the following methods;
-BMT [19] -Clarke[11]
-Jones[11] -Wagner-Smitt[11]
-Norrbin[11] -Inoue[11]
-Kijima[15] -Ankudinov[17]
-Khattab[18] -Mean values of all data
The methods highlighted in bold text were used to compare the forces and moments in order to assess the effect of the choice of derivatives on the simulated manoeuvring performance. The comparison of the forces and moments is shown in Figures 19-22 in the Appendix.
Full details of these and all other derivative predictions for the GOLDEN PRINCESS are given in [27].
Figures 9 and 10 below present the comparison of the turning circle and 20/20 zig-zag manoeuvre for the GOLDEN PRINCESS using derivatives from the BMT and Mean Values datasets.
Fig.9 35 Degree Turning Circle-10 knots
Fig.10 20/20 Zig-Zag-10 knots
Figures 11-14 below, present a comparison of a 'real' manoeuvre performed using the BMT derivatives and the mean values for a slow speed turn in Venice. A comparison was made with full-scale data recorded onboard for the manoeuvre (shown as the black line on the position plots)
Fig.11 Slow Speed Turn-BMT Derivatives
Fig.12 Slow Speed Turn-Mean Derivatives
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