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3.2 The relation between the length of a ship and lateral deviation
The relation between the length of a ship and the maximum lateral deviation is shown in Fig.4 and the relation between the length of a ship and the mean lateral deviation is shown in Fig.5. The horizontal axis in each figure indicates the length of a ship. The vertical axis in the upper figure indicates the maximum lateral deviation and one in the lower figure indicates the mean lateral deviation. The symbol "×" indicates the mean values concerning the loop width which is 10 degrees.
The maximum and mean lateral deviations tend to increase as the length of a ship becomes large.
Fig.4 |
The relation between maximum lateral deviation and the length of a ship |
Fig.5 |
The relation between mean lateral deviation and the length of a ship |
3.3 Relation between loop width and rudder angles for checking turn
Figure 6 shows the relation between the loop width and the maximum rudder angle for checking turn and Figure 7 shows the relation between the loop width and the proportion of the rudder angle for checking turn. The horizontal axis in each figure indicates the loop width. The vertical axis in the upper figure shows the maximum rudder angle for checking turn and in the lower figure shows proportion of the rudder angle for checking turn. The symbol "●" indicates the mean value concerning the 240-meter ships. The symbol "▲" indicates the mean values concerning the 150-meter ships.
The maximum rudder angle for checking turn and the proportion of the rudder angle for checking turn tend to increase as the loop width becomes large.
Fig.6 |
The relation between maximum rudder angle for checking turn and loop width |
Fig.7 |
The relation between the proportion of rudder angle for checking turn and loop width |
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