Hutauruk, Ronald MangasiRengi, Pareng2016-03-312016-03-312016-03-31978-979-792-437-9wahyu sari yenihttp://repository.unri.ac.id/xmlui/handle/123456789/8136This reseach discuss wave surface simulation on vessel from the optimization hullform. Principal dimension of vessel is LBP 14,0 m; B 2,8 m; H 2,4 m and T 1 m. Optimization method’s use software aplication namely Solver as provided by Microsoft Excel. The objective function is to minimize its resistant after mother vessel is modified . Hullform is formed by measure its dimension in longitudinal, tranverse and horizontal position. After the smallest resistant is found, motion of the vessel in sea water as hydrodynamics performance is made in numerical simulation by using Hullspeed. All the wave contour will be presented as a response of the vessels in facing the wave.enwave surfaceHullspeedwave contournumerical simulationUR-Proceedings