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The number of active vessels in 2019 was 10 for longline fishery and 2 for purse seine fishery. With this fishing capacity, Korean tuna longline fishery caught 3,208 ton in 2019, which was 14% higher than that of 2018. The fishing efforts in 2019 were 5,899 thousand hooks and distributed in only the western Indian Ocean, while the fishing efforts averaged for 5 recent years (2015-2019) were 6,328 thousand hooks and distributed in the western tropical areas around 0-20°S as well as in the western and eastern areas around 20°S-40°S. Since 2015, some vessels have moved to the western tropical area between 5°N-10°S to fish for bigeye tuna and yellowfin tuna. Korean tuna purse seine fishery in the Indian Ocean recorded 20,650 ton in 2019. In 2019, 2 vessels of Korean tuna purse seine fishery operated mainly in the western and central tropical areas around 10°N-10°S. The fishing efforts in 2019 were 763 sets, which mainly distributed in the western and central tropical areas around 40°E-70°E. In 2019, 3 national scientific observers for longline fishery were dispatched onboard for implementing observer program and scientific data collection, which carried out 4.7% of observer coverage in terms of the number of hooks. And regional scientific observers were dispatched onboard for purse seine fishery.
