TY - JOUR N2 - The aim of this study is to examine the relationship between the wave steepness (Hi /L) with a stable profile slope of small size stone rubble mound breakwaters. The results of the study are expected to solve the difficulty of getting a big size crushed stone as a required based on Hudson method. Laboratory physical model study under 1:20 geometric scale was performed. The results showed that the initial sloping breakwater was changed into the S Curve shape profile and achieve a stable condition on the profile equation of y = â??ax3 â??bx + c, where a, b and c are the factors which are functions of dHi/L2. Factor c is a relative depth (dâ??/d). The Equations obtained can be used in the planning and designing of S-Curve rubble mound breakwater with relatively small grain size of rocks. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021. KW - Offshore oil well production KW - Crushed stones; Geometric scale; Physical model; Planning and designings; Profile equation; Rubble mound breakwaters; Small grain size; Wave steepness KW - Breakwaters ID - scholars15868 Y1 - 2021/// UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100823596&doi=10.1007%2f978-981-33-6311-3_105&partnerID=40&md5=1e2644a24b5de993a924bc1974545d63 JF - Lecture Notes in Civil Engineering A1 - Thaha, M.A. A1 - Dwipuspita, A.I. A1 - Dharmowijoyo, D.B.E. VL - 132 AV - none N1 - cited By 0; Conference of 6th International Conference on Civil, Offshore and Environmental Engineering, ICCOEE 2020 ; Conference Date: 13 July 2021 Through 15 July 2021; Conference Code:253689 SP - 928 TI - S-curve rubble mound breakwater SN - 23662557 PB - Springer Science and Business Media Deutschland GmbH EP - 935 ER -