A study of diving depth on deep-diving submersible vehicles

Liang, Cho–Chung; Teng, Tso–Liang; Lai, Wen-Hao

doi:10.1016/s0308-0161(98)00041-6

Cited by 8 publications

(3 citation statements)

References 3 publications

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“…Indeed, in our review bait was always included when deploying RUVs in depths greater than 45 m. All BRUV systems deployed in depths greater than 350 m were landers (Capezzuto et al 2012) or submersibles (Jones et al 2003) fixed on the seafloor. These apparatuses are designed to withstand high pressure (Liang et al 1998) and operate for long periods of time (Kononets et al 2021). In contrast, simple apparatuses, which consist of a camera with short battery life, placed inside its housing and then fixed on a steel frame, were deployed in shallower depths (Díaz-Gil et al 2017;Cattano et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Monitoring marine fishes using underwater video techniques in the Mediterranean Sea

Nalmpanti,

Chrysafi,

Meeuwig

et al. 2023

Rev Fish Biol Fisheries

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The use of underwater video techniques has expanded rapidly in ecological studies and is particularly desirable in protected areas since the method does not impact the habitat or remove fish. The Mediterranean Sea is a biodiversity hotspot under high anthropogenic pressure and consequently, non-destructive and non-extractive techniques for fish monitoring are advantageous. Here, we review 110 publications that used underwater video in fish-related studies in the Mediterranean basin. The most common technique used in the Mediterranean Sea was Remotely Operated Vehicles (ROV) (33%), followed by Remote Underwater Video (RUV) systems (20%), Diver Operated Video (DOV) systems (20%) and Baited Remote Underwater Video (BRUV) systems (19%). Approximately one third of the studies used an additional sampling method, such as fisheries-based or molecular methods with the aim to compare the surveying effectiveness or produce complementary data. The most frequent objectives of the reviewed studies were related to fish community structure, i.e., focusing on community wide metrics such as abundance and biodiversity, or behavioral analyses, while the most commonly studied environments were those of the western Mediterranean and shallow waters, usually involving sandy or rocky reef habitats. Sampling protocols differed widely among studies with transect lengths, soak times and baits all varying. Future research should focus on the least studied parts of the region, such as the eastern and southern Mediterranean Sea and deep-sea habitats. Finally, the development of standardized sampling protocols is recommended to ensure that data are comparable among studies.

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Section: Discussionmentioning

confidence: 99%

Monitoring marine fishes using underwater video techniques in the Mediterranean Sea

Nalmpanti,

Chrysafi,

Meeuwig

et al. 2023

Rev Fish Biol Fisheries

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“…Liang et al. 8 researched on the geometric parameters, gravity–buoyancy ratio, high strength material of the spherical and elliptical shells using the finite element software. Li et al.…”

Section: Introductionmentioning

confidence: 99%

“…Yuan et al 7 presented a novel swedged-stiffened pressure hull and investigated how the cone angle of the hull would affect the entire performance. Liang et al 8 researched on the geometric parameters, gravity-buoyancy ratio, high strength material of the spherical and elliptical shells using the finite element software. Li et al 9 did research on nonlinear stability of a manned submersible and gave the relationship of buckling critical pressure, thickness, and radius.…”

Section: Introductionmentioning

confidence: 99%

Kriging-based optimization design for a new style shell with black box constraints

Dong

Song

Wang

2017

Journal of Algorithms & Computational Technology

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Complex engineering applications generally have the black box and computationally expensive characteristics. Surrogatebased optimization algorithms can effectively solve expensive black box optimization problems. This paper employs the kriging predictor to construct a surrogate model and uses an initial multistart optimization process to realize the global search on this kriging model. Based on a proposed trust region framework, a local search is carried out around the current promising solution. The whole optimization algorithm is implemented to solve a new style shell design of the autonomous underwater vehicle. Based on finite element analysis, buoyancy-weight ratio, maximum von Mises stress, and buckling critical load of the new style shell are calculated and stored as expensive sample values to construct the kriging model. Finally, the better design parameters of the new shell are obtained by this proposed optimization algorithm. In addition, compared with the traditional shell, the new shell shows the stronger stability and better buoyancy-weight ratio.

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