Classification Principles for Very Large Floating Structures

Ng, ChunWee; Jiang, Rongrong

doi:10.1007/978-981-13-8743-2_13

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…There have been some attempts to classify fish cages by the maritime classification societies (DNV GL, 2017;ABS, 2018;Ng and Jiang, 2019). The attempts are similar to what they applied for the offshore oil and gas industry and hence it is not so appropriate for fish cages.…”

Section: Types Of Fish Cage Designsmentioning

confidence: 99%

Review of cage and containment tank designs for offshore fish farming

et al. 2020

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Fish farm operators worldwide are planning to move offshore due to lack of available nearshore production sites in heavily utilized coastal zones, where there is increasing community opposition to coastal development and conflict with other usages such as shipping, fishing, tourism, conservation and recreation. Moreover, offshore sites provide more sea space and generally better water quality, which are needed to increase the production of healthy fish. This review paper begins with the definition of offshore for fish farming based on a unified viewpoint and proceeds to highlight the challenges faced by going offshore. Next, the paper presents a review of designs of fish cages from conventional nearshore fish farms to nextgeneration offshore fish farms, which have to contend with a high energy environment. The fish cages may be divided into the open net cage system and the closed containment tank system. The open net cage system can be categorized further into 5 types. The advantages and disadvantages of the various fish cage designs will be discussed. Further, different types of cage designs are compared with the view to guide feasibility of offshore fish farming. Colocation with other synergetic industries is discussed as a possible example of future offshore fish farms.

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Section: Types Of Fish Cage Designsmentioning

confidence: 99%

Review of cage and containment tank designs for offshore fish farming

et al. 2020

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“…Classifying DOA infrastructures is challenging due to its diverse types 27–30 . If based on their relationship with the seabed, DOA infrastructures can be divided into pens and cages; if based on water permeability, they can be divided into closed containments and pens or cages; and if based on their status in water layers, they can be divided into floating, submersible, and semi‐submersible cages.…”

Section: Doa Practices In Chinamentioning

confidence: 99%

“…Classifying DOA infrastructures is challenging due to its diverse types. [27][28][29][30] If based on their relationship with the seabed, DOA infrastructures can be divided into pens and cages; if based on water permeability, they can be divided into closed containments and pens or cages; and if based on their status in water layers, they can be divided into floating, submersible, and semi-submersible cages. In this review, the types of DOA infrastructures are categorized into six groups: offshore pens, stabilized cages, floating cages, submersible cages, semisubmersible cages, and closed containments (Table 2).…”

Section: Definition Of Doamentioning

confidence: 99%

Advancements and hurdles of deeper‐offshore aquaculture in China

Dong,

Huang

et al. 2023

Reviews in Aquaculture

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Open offshore areas boast strong physical self‐purification capacity and abundant non‐fossil energy resources, such as wind, waves, and solar energy. Consequently, the global community anticipates nearshore aquaculture to transition towards offshore to help increase production, alleviate eutrophication, and reduce greenhouse gas emissions. To date, China has constructed over 40 sets of deeper‐offshore aquaculture (DOA) infrastructures, encompassing various types of pens, cages and closed containment systems. Although DOA holds vast potential to address food security and aquaculture sustainability in China, its current development trajectory struggles to meet those goals and primarily achieves profitability by focusing on high‐value species or products. For DOA to realize its potential, innovative production systems must tackle three key contradictions: enterprise profitability versus product affordability, clean energy‐based products versus carbon‐intensive products, and automated operation versus re‐employment of coastal fish farmers. Resolving these contradictions requires the development of a large‐scale, anti‐typhoon offshore enclosure that integrates mariculture with other industries, such as wind farming, food processing, and tourism. This approach will foster a sustainable balance between profitability, environmental impact, and employment opportunities in the sector.

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“…It plays a non-negligible role in the overall coupled dynamics of Very Large Floating Structures (VLFS), generally defined as floating structures whose longer size is greater than 10 3 m [23]. Such structures may be regarded as a frontier for MPP concepts, since they would provide large new areas available for any activity, up to the limit of floating cities [22,23,73]. The scaling of a VLFS is very challenging, mainly because of two issues: 1) the large dimensions of the platform; 2) the scaling of the bending stiffness.…”

Section: Hull Hydrodynamic Forcesmentioning

confidence: 99%