This study is intended to secure seolge and structural strength of the suspension as necessary amphibious boat amphibious facilitate a possible amphibious boat 7m parenting class. Developed a technique for mounting a three-wheel drive track traveling device to medium-sized vessels, and the control device in order to improve the efficiency of the safety and operation of this device, the braking device of the land driving, the steering apparatus and the linear adapted to install the device development and installation of the wheels on the bottom, leaving space travel wheel award during lift pockets (wheel pocket) analyzed the impact of the ship resistance and stability, and tried to improve the problem.

Abstract
 1. 서 론
 2. 선체 유체정역학적(Hydrostatics) 분석 및 기본설계
  2.1 Original Hull Design - CASE No.1
  2.2 Open Hull Design (휠 포켓으로 인한 부력상실부에 대한 검토)-CASE No.2
  2.2 Sliding door 적용 Hull Design -CASE No.3
  2.3 현가장치 설계
 3. 성능 평가
  3.1 육상 경사도 주행 평가
  3.2 승선 성능 평가
 4. 결 론

• 나완용(Shinsung University) | Wan-Yong Rha
• 서용식(DAO Yacht) | Yong-Sik Suh