This paper examines the acquisition of the measurement data of the spatial distribution of unsteady pressure on a ship advancing in waves. The purpose of the study is to investigate the reliability of the pressure data obtained by the unprecedented experiment and to provide experimental data of unsteady pressure which can be used for validation of arbitrary computation methods. The optical fiber sensing technology, so-called FBG (fiber Bragg gratings) sensing, is employed as the pressure sensors. In the experiment, 379 FBG pressure sensors (version 7; the latest version) in total are attached to the port side surface of ship model and also ordinary strain-type pressure sensors are embedded in the starboard side for validating reliability of FBG pressure sensors by comparing both results. In addition to the pressure distribution, measurement is made for unsteady hydrodynamic forces such as added mass, damping coefficients, and wave exciting forces, and also for ship motions and added resistance. Most of the measurement is repeated at least five times for each condition, and results of measured pressures are evaluated with mean value and standard deviation. Regarding the added resistance, the distribution for estimating added resistance is also extracted from obtained pressure distribution and its pressure contour is illustrated to show visually which hull region affects the added resistance significantly. Validation of the measured pressure with FBG pressure sensors is carried out also by integrating measured pressures over the ship model surface and comparing it with forces directly measured with load cells. The measured pressure distribution is compared with typical calculation results with the Rankine panel method in frequency domain to demonstrate usefulness of the spatial pressure data for validating the calculation method. Through these studies, it is confirmed that the measured unsteady pressures with FBG pressure sensors are accurate enough and valuable as the validation data for any calculation method.

本文研究了波浪中前进的船舶非定常压力空间分布测量数据的采集。研究的目的是调查前所未有的实验获得的压力数据的可靠性，并提供可用于验证任意计算方法的非定常压力实验数据。光纤传感技术，即所谓的FBG（光纤布拉格光栅）传感，被用作压力传感器。实验中，船模左舷表面贴装了总共379个FBG压力传感器（版本7，最新版本），右舷也嵌入了普通应变式压力传感器，验证了FBG压力传感器的可靠性。比较两个结果。除了压力分布之外，还测量非定常水动力，例如附加质量、阻尼系数和波浪激振力，以及船舶运动和附加阻力。大多数测量对于每个条件至少重复五次，并且测量压力的结果用平均值和标准偏差来评估。对于附加阻力，还从获得的压力分布中提取用于估计附加阻力的分布，并示出其压力等值线，以直观地显示哪个船体区域对附加阻力影响显着。使用 FBG 压力传感器对测得的压力进行验证还可以通过积分船模型表面测得的压力并将其与用称重传感器直接测得的力进行比较来进行。将测得的压力分布与频域朗肯面板法的典型计算结果进行比较，以证明空间压力数据对于验证计算方法的有用性。通过这些研究，证实FBG压力传感器测量的非稳态压力足够准确，并且作为任何计算方法的验证数据都很有价值。