The partial air cushion supported catamaran (PACSCAT) is a novel Surface Effect Ship (SES) and possesses distinctive resistance performance due to the presence of planing bottom. In this paper, the design of PACSCAT and air cushion system are described in detail. Model tests were carried out for Froude numbers ranging from 0.1 to 1.11, the focus is on the influence of air cushion system on resistance characteristics. Drag-reducing effect of air cushion system was proved by means of contrast tests in cuhionborne and non-cushionborne mode. Wave-making characteristics reflect that the PACSCAT would eventually enter planing regime, in which the air could just escape under the seals and the hull body could operate in a steady state. To acquire different air cushion pressure, air flow rate and leakage height were adjusted during tests. Experimental results show that the resistance performance in planing regime would decrease evidently as the increased air flow rate, however, the scheme with medium leakage height presents the best resistance performance in the hump region.

局部气垫双体船（PACSCAT）是一种新型的表面效应船（SES），并且由于存在平底，因此具有独特的抵抗性能。本文详细介绍了PACSCAT和气垫系统的设计。对Froude数从0.1到1.11进行了模型测试，重点是气垫系统对电阻特性的影响。气垫式和非垫式的气垫系统通过对比试验证明了减阻作用。造波特性反映出PACSCAT最终将进入滑行状态，在这种状态下，空气可能只是在密封之下逸出，船体可以在稳定状态下运行。为了获得不同的气垫压力，在测试过程中调整了空气流速和泄漏高度。