• Journal of Navigation and Port Research
• /
• v.36 no.10
• /
• pp.787-793
• /
• 2012

A hull form design technique to enhance the wave-making resistance performance for a medium size high speed Ro-Pax ship was studied introducing an optimization method and an automatic hull form modification method. SQP(sequential quadratic programming) was applied as the optimization algorithm and the geometry of hull surface was represented and modified using the NURBS(Non-Uniform Rational B-Spline). The wave-making resistance performance as an objective function in the optimization procedure was evaluated using the Rankine source panel method in which nonlinearity of the free surface boundary conditions and the trim and sinkage of the ship was fully taken into account. Using the Ro-Pax ship as a base hull, the hull-form optimization method was applied to obtain the hull shape that produced the lower wave-making resistance. To verify the validity of the hull-form optimization method, the numerical results was compared with the model test results.

• Journal of Advanced Marine Engineering and Technology
• /
• v.32 no.8
• /
• pp.1170-1177
• /
• 2008

The purpose of this study is to measure and analyze the indoor thermal conditions in the spring of a korean coastal passenger ship which is 590-passenger Ro-Pax type built at 1997. Especially this study has focussed on the relations between the diffuser open ratio, which can be controlled by 12 steps, and the comfort. Followings are the results of this study. (1) The supply air volume to cabins are maximum 4.3 and 2 times more than design quantity when the diffusers in cabins are open 100% and 50%, respectively. (2) Regardless of diffuser open ratio, the supply air maintains constantly high temperature and below 10% of relative humidity through the experimental days. (3) All the cabins are not satisfied with the ASHRAE comfort criterion at the condition of 100% and 50% of diffuser open ratio, because of high temperature and low relative humidity. (4) At a low diffuser open ratio, number of cabins which satisfy the ASHRAE comfort criterion are increased. (5) Humidifying and dehumidifying, and hvac control system of each cabin must be reviewed and studied at the view of passengers to service more comfort environments.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2019.11a
• /
• pp.127-129
• /
• 2019

전라남도 완도 연안여객선 터미널에서 2018년 10월 연안여객선 현대화편드 1호에 의한 선박 '한일고속페리 실버클라우드호'가 취항식을 가졌다. 국내 여객선 시장은 그간 해외 중고선에만 의존해왔는데 순수 국내 기술로 건조된 여객선이 등장한 것이다. 이에 따라 우리나라 여객선 산업은 기술발전과 디자인 등 그 품질이 향상 될 것이다. 그간 여객선 이용객의 수요는 꾸준히 증가하고 있으나 영세한 규모의 국내 선사는 비용 부담 때문에 신조를 건조하기 어려워 해외 중고선을 수입하였다. 이로 인해 국내 여객선의 실내 인테리어의 노후화, 인테리어 개조에 따르는 선박 성능의 저하 등 다양한 문제점을 가지고 있었다. 따라서 정부는 2018년 현대화펀드를 통해 노후된 연안여객선을 대체할 새로운 선박의 건조를 지원함으로써 연안여객선은 이제 선사의 사적 소유물을 넘어 공공적 성격이 교통수단이 되었다. 이로써 연안여객선은 이동 편의 향상을 비롯하여 승객에게 더 큰 만족을 줄 수 있는 디자인 개선방안이 요구된다.