Examination of the intact stability and the seakeeping behaviour

6.1 Variation of the GM values
accelerations also decrease signicantly to values of about 3 m /s 2 .
Table 6.2: Stability data for the midsized vessel
Ballast arrival loading
Value Unit
condition
KM 21.45 [m]
KG 11.02 [m]
GM solid 10.43 [m]
Light ship Value Unit
vcg LSW 15.13 [m]
16
14
Maximum transverse acceleration on the bridge [m/s 2 ]
12
10
8
6
4
2
Ballast arrival loading condition
0
2 4 6 8 10 12 14 16
GM solid [m]
Accident situation 1 Accident situation 2 Accident situation 3
Figure 6.2: Vessel No. 01 in ballast arrival oating condition: Variation of GM solid
6.1.3 Large vessel
The large vessel for the detailed stability analysis is the Chicago Express. Its relevant data
are listed in table 6.3, while more detailed data can be found in the appendix A.14 on page 72.
The GM is varied around the ballast arrival GM solid = 12.40 m in both directions within a range
of about GM ∼ = 5 ... 15 m.
In gure 6.3 the resulting transversal accelerations on the bridge are shown related to the
varied GM solid values. For all three accident situations it follows a comparable curve slope. This
time no signicant transversal accelerations occur in the ballast arrival loading condition. With
a higher stability, than in the ballast arrival loading condition, the behavior of the vessel does
not change. Furthermore all analysed GM solid values up to 14 m are realistically reachable for
49