Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Operational Improvement of Hemire ROV for Deep-sea Survey and Application to Exploration of Ferromanganese Crusts of Western Pacific Seamount

해미래의 심해탐사 운용기법 개선 및 서태평양 해저산 망간각 탐사에 적용

  • 백혁 (선박해양플랜트연구소 해양ICT연구본부) ;
  • 박진영 (선박해양플랜트연구소 해양ICT연구본부) ;
  • 심형원 (선박해양플랜트연구소 해양ICT연구본부) ;
  • 전봉환 (선박해양플랜트연구소 해양ICT연구본부) ;
  • 이판묵 (선박해양플랜트연구소 해양ICT연구본부)
  • Received : 2018.05.10
  • Accepted : 2018.08.02
  • Published : 2018.08.31
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Abstract

This paper presents the results of an exploration of the ferromanganese crusts of Western Pacific Seamount registered by the Korean government. This area has been surveyed with a deep-sea camera and crust samples have been acquired by deep-sea dredging since 2013. On October 18-19, 2017, a united research team from KIOST and KRISO explored two blocks, OSM11 and OSM07, on the seamount using Hemire ROV. A precise survey was conducted on the ferromanganese crusts and sediments covering the slope/top of OSM11 and the middle flat area of OSM07. Rock samples were collected with precise positioning, and HD videos were recorded for 7 hours. This paper discusses the technical issues of this exploration in terms of (1) how to deal with an emergency situation during an electric power blackout, (2) the improvement of the thruster power by adding cooling plugs to the housings of the thruster amplifiers, (3) the relative motion of the depressor by changing the fixing method of the cable terminator, which affects the service life of the cable, (4) a sampling technique for the steep slope of the seamount, (5) integrated navigation under a USBL blackout, and (6) a 3-dimensional image mosaic for visualizing the distribution state of the crusts.

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References

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