Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2005. / Includes bibliographical references (leaves 67-70). / As environmentalism has swept into political prominence, influencing the environmental policy of developed nations, the IMO- the UN dedicated legislator of the shipping industry- has been increasingly faced with challenges to its decision making process as well as to the effective fulfillment of its role. The current treatment of environmental matters, especially when it comes to negotiations for enacting universally accepted and implemented regulations seems to be in need for reconsideration. This is mainly the case because, the systematic adoption of unilateral/regional measures, at best, can undermine the status of the IMO and, at worst, may prove disruptive to international shipping. The purpose of this thesis is to put concerns over the role of the IMO in international environmental regulations negotiations into a specific context and attempt to view the organization's treatment of the issues it is faced with from a perspective which will reveal the strengths and the shortcomings of the IMO, so that credible remedies could be suggested. In order to achieve this goal, three case studies were used namely the Member States, the Interest Group, and the Industry case study. / (cont.) These cases- selected to identify areas of improvement for the 1MO- have demonstrated that the agency's working procedures merit reassessment if the agency is to remain the industry's legislator. A close examination of the conclusions extracted from the three case studies reveals that the MO is faced with the challenge of leveraging multiple types of initiatives which can emanate from powerful maritime nations, coalition/regional groups, interest groups, stakeholders, and the public.Consequently, if it is to serve its purpose effectively and efficiently, the IMO ought to develop the institutional mechanisms that will encourage policy innovations in the realm of international environmental negotiations whilst strengthening the agency's status as the industry's legislator. Similarly, in view of its evolving role, the agency has to act proactively so as to strike a balance between environmentally sound and sustainable shipping. The closing chapter of the thesis indicates that judging the present and the future of the [MO should be done in the light of excessive pessimism, since some initiatives already underway may improve the current situation, but there is still a lot of room for improvement. / by Constantinos Kyprou Hadjistassou. / S.M.

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1985. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Bibliography: leaves 116-120. / by Spyridon Athanasios Kinnas. / Ph.D.

Thesis (Ocean E)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1984. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Includes bibliographical references. / Gengshen Liu. / Ocean E

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994. / Includes bibliographical references (leaves 84-86). / by Christophe Pozet. / M.S.

Thesis (Ocean E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1985. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Bibliography: leaves 62-63. / by Hyunkyoung Shin. / Ocean E.

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2004. / Includes bibliographical references (p. 91-92). / Roll stabilization for monohulls is an important issue in naval architecture. Several methods including roll stabilization tanks, active control fins, rudder roll stabilization systems, and bilge keels are commonly used for roll stabilization purposes and each one of them has its own advantages and disadvantages. In this thesis roll stabilization is studied by using passive and active roll stabilization configurations with hydrofoils. The main objective of this research is to identify an effective roll stabilization system for use on high- speed monohull vessels. The analysis of the performance of a passive hydrofoil configuration is used as a starting point for the development of active control mechanisms. A generic fast monohull was created for study purposes and the SWAN-2 code (ShipWaveANalysis), a state-of-the-art time domain simulation program, was used for the analysis of the linear free-surface flow around the vessel. Simulations were carried out in regular waves incident at angles ranging from 90⁰, 105⁰,120⁰,135⁰ and 150⁰ degrees relative to the ship axis, 900 being beam waves and 180⁰ degree being head waves. The ship was equipped with a hydrofoil fixed amidships, quarter to aft and aft to determine the sensitivity of roll motion on the longitudinal position of the lifting appendage. / (cont.) It was found that the most efficient location for the hydrofoil is amidships leading to a 20% to 60% roll motion reduction (depending on the wave angle and ship speed) of the RMS value of roll motion in an ISSC spectrum. Also studies were performed to determine the planform area of the hydrofoil for optimal roll motion reduction. In addition, four different Froude numbers are used, ranging from 0.3 to 0.9, to evaluate the effect of the speed on the effectiveness of the lifting appendage. As expected, higher speeds lead to better seakeeping performance, namely better roll reduction compared to lower speeds. Passive hydrofoils were found to be very effective in reducing the rolling motion. Active roll control mechanisms were also investigated by seeking the optimal time-dependent variation of the modulus and phase of the hydrofoil angle of attack and found to be very effective leading to increased roll reduction. The development of such optimal control algorithms is expected to lead to an enhanced roll seakeeping performance over a broader range of sea state conditions and ship speeds. / by Talha Ulusoy. / S.M.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1992. / Includes bibliographical references (p. 71-72). / by Philip Mario Delpero. / M.S.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1991. / Includes bibliographical references (p. 226-233). / by Kenneth D. Rolt. / M.S.

Thesis (Ph. D.)--Joint Program in Oceanographic Engineering (Massachusetts Institute of Technology, Dept. of Ocean Engineering; and the Woods Hole Oceanographic Institution), 1987. / Bibliography: p. 213-228. / by James B. Riley. / Ph.D.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994. / Includes bibliographical references (p. 124-125). / by Andrew Jones, Jr. / M.S.