Stability upgrade of a typical Philippine ferry

Vassalos, Dracos and Stoumpos, Sokratis and Boulougouris, Evangelos; (2015) Stability upgrade of a typical Philippine ferry. In: STAB2015. University of Strathclyde, GBR, pp. 521-527.

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The waterborne transport in the Philippines has been a sensitive subject amplified by the lack of rules and regulations to restrict ship-owners profit-driven decisions, leading to overloading, with significant impact on ship stability. Most of the Tier-II vessels are using solid ballast to balance trim and increase static stability at the expense of freeboard. To improve matters whilst facilitating the currently adopted process, solutions are required that offer additional buoyancy with increased stability. To this end, a solution is proposed here through the addition of sponsons, providing the required level of intact stability and residual floatability/stability, using a typical Ro-Pax. In this paper, a case study is presented to demonstrate the validity of the proposed solution.