Table 2 The safety index system in the inland channel navigating environment
From: A risk evaluation model for channel navigation based on the gray-fuzzy theory
First-level evaluation factor | Second-level evaluation factor |
|---|---|
Natural environment Y1 | Wind X1 |
Current X3 | |
Visibility X5 | |
channel environment Y2 | Depth of channel X7 |
Width of channel X8 | |
Channel bending X10 | |
Obstruction X11 | |
Turning point X13 | |
Channel intersection X14 | |
Traffic environment Y3 | Traffic flow X15 |
Navigation facilities X17 | |
VTS coverage X19 |