DOI QR코드

DOI QR Code

A study on the havesting process and operating behaviour of working ships for farming laver

김 양식장 채취선의 운항거동과 수확조업에 관한 연구

  • KIM, Ok-sam (Dept. of Naval Architecture & Ocean Eng., Chonnam National University) ;
  • MIN, Eun-bi (Department of Fisheries Science, Chonnam National University) ;
  • HWANG, Doo-jin (School of Marine Technology, Chonnam National University)
  • 김옥삼 (전남대학교 조선해양공학과) ;
  • 민은비 (전남대학교 수산과학과) ;
  • 황두진 (전남대학교 해양기술학부)
  • Received : 2020.05.08
  • Accepted : 2020.08.20
  • Published : 2020.08.31

Abstract

We analyzed the cutting mechanism of laver harvesting machine in the sea area near Gooam Port in Goheung, Jeollanam-do, and investigated the change and efficiency of laver collecting operation in the working ship. The laver working ship slides uniformly from the bow to the upper part of the laver collecting machine on the deck and cuts the wet laver attached to the bottom of the net at the blade of the havesting machine. The laver farming net, which was loaded with laver turrets on the deck by gravity and collected primitives, consisted of a ship structure that led to the stern side and into the sea. The working ship operation is in harvesting process while driving in a S-shape that is separated by one space to efficiently collect the laver net. During laver working ship operation, the speed was 0.51 m/s in the access stage, 0.56 m/s in the havesting stage, and 0.52 m/s in the exit stage. Considering the cutting edge life and production efficiency of the laver harvesting machine, it is appropriate to harvest 1.15 to 1.26 kg/rpm by operating at a rotational speed of about 700 to 800 rpm rather than forcibly harvesting the product at high speed. On the deck of the working ship, 959.7 kg of starboard and 1048.7 kg of center were 964.7 kg of port side. Based on the starboard, 9.3% of the central part and 0.5% of the port side appeared. The reason for this was due to the difference in harvest time according to the turning direction of the working ship.

Keywords

References

  1. Kim CW. 2013. Apparatus for gathering laver, Patent registration (20-2012-0008746).
  2. Kim OS, Hwang DJ and Yoo GB. 2019. Introduction to offshore production machinery. Green office supply. Chonnam Yeosu, 59-98.
  3. Korean Statistic Information Service (KOSIS). 2018. Fishery production trend investigation, By fishery and Each variety statistics. Retrieved from http://www.kostat.go.kr. Accessed 16 June 2020.
  4. Min EB, Yoon EA, Hwang DJ, Kim OS and Yoo GB. 2020. A study on the improvement of loading and unloading work in laver aquaculture industry. The Korean Society of Fisheries and Ocean Technology 56, 45-54. https://doi.org/10.3796/KSFOT.2020.56.1.045.
  5. Ministry of Ocean and Fisheries (MOF). 2018. Import/Export Trade Statistics in Fisheries Information Service. Retrieved from http://www.fips.go.kr. Accessed 8 July 2020.