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including farm concept, kelp bi- ology, methane production, up- welling and test farms. SESSION T8 —May 26, P.M.— Offshore Mobile Platforms T8-1 "Evaluating Stability Characteristics of Self-floating Offshore Towers" by M.F. Met- calf and M.W. Praught. SYNOPSIS — Traditional tech- niques of evaluating stability during upending have been sup- plemented by new procedures involving interactive computer simulation techniques. Stability considerations developed in the design process are compared with regular guidelines and standards in order to point out the extent to which designers today are de- veloping rational stability criteria. T8-2 "Nonmetallic Materials for Offshore Engineering" by J.D. Stachiw. SYNOPSIS — Nonmetallic mate- rials, in particular concrete and glass materials, have many po- tential offshore applications. Re- search required on properties of these materials is described. T8-3 "Current Advancement in Automatic Station-Keeping" by C.R. Schaeffner and T.F. Dixon. SYNOPSIS—A description is giv- en of the automatic station-keep- ing system proposed for the Glomar-40 Class drillship, con- sisting of conventional mooring and dynamic positioning based on an inertial reference system. A discussion of the computer simu- lation showing the value of the inertial reference unit is included. RT-3 Round-Table Discussion — All authors from Sessions T5 and T7. RT-4 Round-Table Discussion — All authors from Sessions T6 and T8. SESSION T9 — May 27, A.M. — LNG T9-1 "A Review of the IMCO Code for Gas Ships" by R.J. Lakey, J.W. Kime and T.R. Dickey. SYNOPSIS —The paper reviews the background of the develop- ment of some of the more import- ant requirements of the IMCO Code for Liquefied Gas Ships, such as those for cargo tanks, re- lief valves and damage stability. It also explains the actions of the Coast Guard in implementing the Code. T9-2 "LNG Ship Safety En- hanced by Research and Develop- ment" by J.L. Howard and R. Kvamsdal. SYNOPSIS—The authors provide a brief history of the analytical and research work that formed the basis for the Kvaerner-Moss spherical tank design. They go on to describe in more detail the cor- relation between the analysis and the recent experimental results obtained testing the larger alu- minum tanks. Data concerning recent LNG ship collision studies and a discussion of the import- ance of total ship safety in the as-built condition are included. May 1, 1977 T9-3 "The LNG Ship in a Changing Energy Environment" by W D. Thomas. SYNOPSIS —The author's view on the changing worldwide en- ergy situation and the effects of those changes on future LNG ships is presented. A review of shipboard LNG containment sys- tems which are being offered to- day or have been constructed in the past is also included. The author discusses various design parameters such as speed and power, fuel oil prices, ship size, tank type and size, liquefaction equipment and their effects on the cost of delivery of LNG by ship. T9-4 "U.S. Offshore LNG Ter- minals: If and When" by H.S. Marcus and J.H. Larson. SYNOPSIS—The authors discuss the many factors, economic and non-economic, that will influence the possible use of offshore LNG terminals in the United States. Also described is the conceptual design of a computer model that will permit the economic evalua- tion of alternative LNG logistical systems. Hypotheses are offered concerning the future use of U.S. LNG terminals. SESSION T10—May 27, A.M.— Marine Transportation (Naval Architecture) T10-1 "A Look at Future Ma- terials/Structural Design Inter- faces" by P.H. Francis, J. Lank- ford Jr. and T.S. Cook. 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