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Discussion papers | Copyright
https://doi.org/10.5194/os-2018-88
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 10 Oct 2018

Research article | 10 Oct 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Ocean Science (OS).

Deep-sea search and recovery: with and without operating an underwater vehicle

Tongwei Zhang1,2,3, Shengjie Qin1, Xiangxin Wang1, and Jialing Tang1 Tongwei Zhang et al.
  • 1National Deep Sea Center, Qingdao 266237, China
  • 2Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266061, China
  • 3Joint Laboratory for Ocean Observation and Detection, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China

Abstract. Deep-sea search and recovery mainly refers to the search, recovery, and salvage of objects with high value that are lost on the deep-sea bottom. Deep-sea search and recovery objects include aircraft black boxes, underwater vehicles, and other types of objects. The recovery and salvage of objects involves accurately obtaining their underwater positions. Depending on whether or not the salvage object carries an acoustic beacon, two methods are available: onboard acoustic signal search and near-bottom sweep search and search. Once the underwater position of a salvage object is known, it can be recovered and salvaged with a remotely operated underwater vehicle (ROV) and/or human-occupied vehicle (HOV). However, there are many difficulties with the practical application of existing deep-sea recovery systems that are based on the deep-sea operation of ROVs and HOVs. Based on the design idea and working mode of TV-grab in oceanography, this paper proposes a new type of deep-sea recovery system that does not rely on operating underwater vehicles and presents its recovery process. The new deep-sea recovery system combines underwater optical imaging, mechanical docking/grasping, acoustic imaging and positioning, and propeller operating to provide low-cost and rapid deep-sea recovery. Compared to the deep-sea recovery system with a ROV and/or HOV, the new deep-sea recovery system without an operating underwater vehicle described in this paper is proposed to be used, but not tested yet.

Tongwei Zhang et al.
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Tongwei Zhang et al.
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Latest update: 19 Oct 2018
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Short summary
We propose a new type of deep-sea recovery system that does not rely on operating underwater vehicles, along with the recovery process. Operating underwater vehicles have many operating difficulties and are expensive, which means that they are often reserved for high-priority missions such as recovering aircraft black boxes from plane crashes. Our system offers low-cost and rapid deep-sea recovery, which means that it can be applied to missions with less social importance.
We propose a new type of deep-sea recovery system that does not rely on operating underwater...
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