Abstract A physical model of a semi-submersible offshore fish farm with a scale of 1:30 has been tested in a wave-current tank. The mooring force of the fish farm in waves was measured and compared for different single-point mooring arrangements, and henceforth, a safe and reliable mooring form is chosen as the mooring system for the fish farm. On this basis, the tested results for the mooring force, heave, pitch and roll of the fish farm in waves and current are presented, in which the effect of drought was discussed. The performance of blocking water flow for the fish farm in pure current was also evaluated. It has been found that increasing the anchor chain length and adding a sinker suspending from the chain could reduce the mooring force significantly despite the fluctuations in the mooring force. During the experiments, the tested value for the heave and pitch as well as the roll has been small, which indicates that the fish farm has a good stability. The mooring force has become larger, while the heave became smaller as the drought increased. Furthermore, the current velocity inside the fish farm is significantly lower than that of its outside. According to the field test results obtained in the fish farm, the farm exhibited good adaptability and it formed a suitable environment for growing cultured fish.

中文翻译：

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单点系泊系统半潜式近海养鱼场在纯波浪和水流中的水动力性能

摘要 一个1:30比例的半潜式近海养鱼场物理模型在波浪流池中进行了试验。测量并比较了不同单点系泊布置的渔场在波浪中的系泊力，因此选择安全可靠的系泊形式作为鱼场的系泊系统。在此基础上，给出了渔场在波浪和水流中的系泊力、升沉、纵摇和横摇的测试结果，并讨论了干旱的影响。还对纯水流下养鱼场阻水性能进行了评估。已经发现，尽管系泊力存在波动，但增加锚链长度并添加悬挂在锚链上的沉降片可以显着降低系泊力。在实验过程中，测试的升沉、俯仰和横滚的值都很小，说明鱼场的稳定性很好。系泊力变得更大，而随着干旱的加剧，升沉变得更小。此外，养鱼场内部的水流速度明显低于外部。根据在养鱼场获得的田间试验结果，该养殖场具有良好的适应性，形成了适合养殖鱼类生长的环境。