<![CDATA[Muara Kambang is a coastal area where the Kambang river begins. The abrasion that occurred in this place caused blockage of the shoreline and eroded the river mouth. One alternative solution to abrasion at the river mouth is to build a jetty. Damage to the beach structure (jetty) was caused by the arrival of large enough sea waves, so that the coastal structure could not withstand these waves. The purpose of this study was to determine the stability of the jetty from natural stone or tetrapod to waves. Wind data is used to determine the analysis of significant wave height, then the theoretical distribution of Normal, Gumbel, and Person III can be determined. Furthermore, the calculation of the significant wave period, the calculation of the depth of the building foot, up to the calculation of the safety factor against rolling and shear. From the calculation results, the following results are obtained: Natural stone: carrying capacity (Qult): 360,540 kg/m3, soil pressure (Qall): 120,180 kg/m2, allowable load: 1,203,607,7 kg, control of rolling (FR) 1.84 ≥ 1.5, control against shear (FS): 1.634 ≥ 1.5, and control against collapse 1.203,602.7 ≥ 107,280,6852. Tetrapod: carrying capacity (Qult): 407,340kg/m3, ground pressure (Qall): 135,780 kg/m2, allowable load: 1,536,350,7 kg, control over rolling (FR) 3,2 ≥ 1,5, control against shear (FS): 3.8 ≥ 1.5, and control against collapse 1,536,350.7 ≥ 437,380,324.]]>
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