The advantages of sandwich material compared to metal materials are its lighter weight and low magnetism, making it suitable for use as minehunting ship hull material. In this study, the authors will make a carbon fiber sandwich with a mixture of Kevlar fiber and pineapple sisal fiber compared to GRP (Glass Reinforced Polyester). This research uses the technique of making Vacuum Assessment Resin Infusion (VARI). Strength test with tensile test, impact test and hardness test using ASTM standard. Based on the test results, carbon composite with a mixture of pineapple fiber has a maximum stress of 70,8008 N/mm2 which can be used as a hull material with a maximum length of 24m. While the carbon sandwich with kevlar has a maximum stress of 382,408N/mm2, GRP has a maximum stress of 127.24N/mm2. Carbon fiber material with kevlar can be used for boats longer than 24m.