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Table 1 Index factors for risks of channel navigation

From: A risk evaluation model for channel navigation based on the gray-fuzzy theory

No. Index factor No. Index factor No. Index factor
X 1 Wind X 8 Width of channel X 15 Traffic flow
X 2 Wave X 9 Length of channel X 16 Maritime control
X 3 Current X 10 Channel bending X 17 Navigation facilities
X 4 Tide X 11 Obstruction X 18 Management system
X 5 Visibility X 12 Hydraulic structure X 19 VTS coverage
X 6 Precipitation X 13 Turning point X 20 Salvage from the shore
X 7 Depth of channel X 14 Channel intersection