Enayam Port

Tamil Research Institute
RAPID TECHNO-ECONOMIC FEASIBILITY REPORT FOR
DEVELOPMENT OF COLACHEL PORT AT TAMILNADU
FINAL REPORT
4. SELECTED CASES OF STUDY
Near shore wave data has been extracted from the offshore wave data using SWAN modeling. Wave
climate near the port has been analyzed in order to select the cases that have been propagated into the
inner port with the agitation model.
The wave rose in the point of interest near the port , shows the predominant waves directions.
Figure 1. Wave Rose (Nearshore wave data)
The range of wave direction goes from South South-East (SSE) to the West, but the biggest probability of
occurrence is South South-West.
The same information is shown in the wave rose in the occurrence table between wave height and
direction.
DD
Probability
0-0.4 0.4-0.8 0.8-1.2 1.2-1.6
Hs
1.6-2 2-2.4 2.4-2.8 2.8-3.2 3.2-3.6 3.6-4
of
occurrence
2 36.4 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005
36.4 70.8 0.012 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.012
70.8 105.2 0.193 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.198
105.2 139.6 0.364 0.991 0.098 0.011 0.011 0.000 0.000 0.000 0.000 0.000 1.476
139.6 174 0.012 1.581 3.312 1.301 0.187 0.004 0.000 0.000 0.000 0.000 6.397
174 208.4 0.182 11.756 18.204 9.805 2.998 1.019 0.262 0.041 0.000 0.000 44.266
208.4 242.8 0.094 3.715 6.133 8.097 8.258 5.668 2.109 0.456 0.146 0.072 34.748
242.8 277.2 0.009 0.168 0.394 0.945 3.254 5.435 2.251 0.308 0.016 0.000 12.781
277.2 311.6 0.000 0.012 0.086 0.015 0.000 0.000 0.000 0.000 0.000 0.000 0.113
311.6 346 0.002 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.004
Probability of
occurrence(Hs) 0.873 18.233 28.227 20.174 14.708 12.125 4.622 0.804 0.162 0.072
The probability of occurrence in the table of directions and wave heights (Hs-DD) is concentrated in the
directions between 140 º and 277º, that correspond with SSE and West. The rest of directions have a small
probability of occurrence so they have not been taken in this study.
Table 1. Occurrence table ( Hs-Direction)
CP1832-FR-AX-03-CP-Harbor_Short_Wave_Agitation-Ed1.docx AX03 - 3 3
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