Virtual monitoring and surveillance of Industrial trawlers in the northern Persian Gulf using VMS data modeling

Document Type : scientific research article

Authors

1 Ph.D. Graduate of Fisheries, Faculty of Marine Sciences and Technology, University of Hormozgan, Bandar Abbas, Iran.

2 Corresponding Author, Assistant Prof., Dept. of Fisheries, Faculty of Marine Sciences and Technology, University of Hormozgan, Bandar Abbas, Iran

3 . Professor, Dept. of Fisheries, Faculty of Marine Sciences and Technology, University of Hormozgan, Bandar Abbas, Iran.

4 Associate Prof., Dept. of Electrical and Computer Engineering, Faculty of Engineering, University of Hormozgan, Bandar Abbas, Iran

Abstract

This study was aimed to modeling VMS data of industrial trawlers of Cutlassfish in the northern Persian Gulf (Hormozgan) between 2017 to 2019. A total of 58904 received VMS signal were provided (for 8 Kish class trawlers) from the Iranian Fisheries Organization (IFO). After arranging and loading data in R software, a database was constructed by using Structured Query Language (SQL). During the data quality review process, 50.13 % of the signals were recognized and deleted as error signals. Thereafter, the number of fishing cruises were estimated for the trawlers and their route maps were prepared. For Mapping the fishing effort and trawling intensity: (1) interpolation of VMS data was performed by using the Catmull–Rom modified technique and (2) trawling was located based on the range of towing speed (2-8 km/h). Fishing effort maps revealed that spatial distribution of towing in 2017 and 2019 have been more limited compared to 2018. Against, trawling intensity is the same in this period and the east of Greater Tunb Island is hotspot. Modelling of VMS data is distinctive feature of the present paper which has been conducted for the first time in Iranian marine waters. Therefore, our results could be helpful to promote monitoring and surveillance of fisheries activities in the Persian Gulf region.

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References

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Journal of Utilization and Cultivation of Aquatics
Volume 13, Issue 3
December 2024
Pages 75-89

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