Steep wave impact pressures and the structural dynamic respi nse of floating production storage and offloading platform (FPSO) bows are studied using 1:80 scale segmented, instrumented models. The construction of these segmented models is discussed. The 'nev -wave' theory is adopted and extended to generate steep waves and a limiting form of steep wave :hat might be found in deep water is proposed. A comparison between linear theoretical, experimeni al and suggested wave models is made. Experimental results with systemically varying parameters are presented. Crown Copyright (c) 2008 Publis ied by Elsevier Ltd. All rights reserved.