Acronym NA
Category
Fisheries
Title Electronic section tagging for purse seine fishing Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Jarle Ladstein Coordinator email NA
Coordinator institution
KM - Kongsberg Maritime AS (Norway)
Institutions involved
NA
Start year 2015 End year 2021 Funding (€) € 321,578.94 Website https://prosjektbanken.forskningsradet.no/project/FORISS/245909?Kilde=FORISS&distribution=Ar&chart=bar&calcType=funding&Sprak=no&sortBy=date&sortOrder=desc&resultCount=30&offset=750&TemaEmne.2=Privat+sektor&source=FORISS&projectId=127259 Summary It is important to haul the cork line and the sink line of purse seines in synchrony. Failing to keep the lines synchronized may cause damage to the net and escape of fish with small chances of survival. Today, synchrony is achieved by attaching colour-coded visual markers. As these markers are often hidden by netting, detecting them may be difficult and requires constant attention from the operator. At night time, visual markers require the use of lights. This light attracts fish to the pulled end of the net, causing risk for damage to the net and dangerous situations in bad weather. It also causes loss of quality of both the current and the next catch if the net is not thoroughly cleaned between hauls.
This project is developing an electronic system for monitoring the hauling process. This will free the operator's attention from constantly looking for visual markers and make the use of extra light unnecessary. The main idea is to place electronic tags at regular intervals along the cork line and the sink line. By detecting the tags both where the net is hauled and where it is deployed, the system will be able to estimate how synchronously the net is being hauled, as well as how much of the net has been deployed or retrieved. This information is also useful for the captain, as it is gives him a better estimate of how much net is left during the final stages of the deployment operation. It is also important for deciding when and how to steer the vessel relative to the wind in bad weather, as well as for regulations and practical considerations related to deciding whether to take aboard the catch.
The primary objective of the project is to develop a system that provides information about the deployed net length and synchrony during both hauling and deployment. The secondary objectives are:
- Develop a robust and efficient electronic tag detection system.
- Develop a method for estimating the net status based on the detection system and vessel instruments.
- Develop graphical user interfaces for configuration and presentation.
A theoretical analysis of different candidate technologies for the electronic tags has been carried out. The results of this analysis was used to select several components that were further tested in the laboratory. The detection range for different tags was tested. In addition, it was tested how seawater and mounting the tags on the cork line or sink line affected the detection range. The test results have been promising, but it increasing the detection range further would be advantageous to assure detection of the tags. The most suitable tags were identified and modifications of the tags to increase the range has been developed. These modified tags will be tested in the laboratory and suitable tags will be tested on-board.
An on-board system and software for testing of tag detection over time have been prepared. Development of software for surveillance of the seine is started.
Keywords
Fishing technology;
Gear technology;
Purse seine;
Marine Region
44
Spitzbergen and Bear Island (27.IIb)
41
Norwegian Sea (27.IIa)
2
Marine Region Map
