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October 2011 www.sname.org/sname/mt (abstracts) Experience from SIMMAN 2008?The First Workshop on Veri?cation and Validation of Ship Maneuvering Simulation Methods BY F. STERN,K. AGDRUP,S.Y. KIM,A.C. HOCHBAUM, K.P. RHEE,F. QUADVLIEG,P. PERDON,T. HINO,R. BROGLIA, AND J.GORSKI Published in the June 2011 Journal of Ship Research e SIMMAN 2008 workshop was held in Copenhagen, Denmark in April 2008. e purpose of the workshop was to benchmark the prediction capabilities of dierent ship maneuvering simulation methods including systems- and CFD-based methods through systematic quantitative comparisons and validation against EFD data for tanker (KVLCC), container ship, and surface combatant hull form test cases. For the KVLCC test case, two stern shape vari- ants named KVLCC1 and KVLCC2 giving dierent instability loops were included. Free model test data were compared with systems- based methods and CFD for specied free maneuvers. Some of the systems-based methods used provided PMM and CMT data, and two used CFD instead. CFD-based methods were used to simulate forced motions and were compared with PMM/CMT model test data. A total of 64 submissions were received for the free maneuver simulations. For the forced motion simulations a total of 16 submis- sions were received, comprising dierent CFD-based methods such as RANS, URANS, and DES. is paper gives an overview of hulls, model tests, test cases, submissions, comparison results as well as the most important observations and conclusions. Development and Case Studies of Accuracy Evaluation System for Curved Shell Plates by Laser Scanner BY KAZUO HIEKATA, HIROYUKI YAMATO,MASAKAZU ENOMOTO, YOSHIAKI OIDA,YOSHIYUKI FURUKAWA, YUKI MAKINO,AND TAKETOSHI SUGIHIRO Published in the May 2011 Journal of Ship Production and Design An accuracy evaluation system for a curved shell plate was devel- oped. In this system, the point cloud data of a curved shell plate measured by a laser scanner and the design data are registered based on the edges of shell plates. e displacement errors that refer to the deviation distances based on the design surface are evaluated and visualized by a color map. In addition to the development of the system, some actual curved shell plates are evaluated and visual- ized by this system. Some correlations between the distribution of the errors, the fabrication process, and eectiveness of feeding back the analysis generated by the system are illustrated. Ship Motion and Wave Radar Data Fusion for Ship- board Wave Measurement BY DAVID C. STREDULINSKY AND ERIC M. THORNHILL Published in the June 2011 Journal of Ship Research Defence Research and Development Canada (DRDC) Atlantic has conducted many dedicated seakeeping and structural load trials on the Canadian Navy research ship CFAV Quest and on several Canadian Navy warships. Typically, wave buoys have been deployed to measure seaway wave characteristics; however, there has been an ongoing interest in evaluating shipboard wave measurement systems. ese systems have some advantages over wave buoys for short-term trials and are needed for longer-term sea trials and to provide wave input data for tactical and real-time ship operator guidance systems. In the last few years there have been signicant advances in wave radar technology. Commercial o-the-shelf? systems are now available. While there is evidence that these sys- tems can provide reliable wave data from shore-based or stationary platform installations, it is DRDCs experience on a ship moving in waves, that wave radars can give good direction and frequency measurements but less reliable wave heights. DRDC has developed a method to improve shipboard wave height measurement through fusion of wave radar data with measured ship motion response data. is paper discusses the development of the wave data fusion pro- cess, validated through previous sea trial data, and presents the results of a recent demonstration of the approach during a sea trial conducted on CFAV Quest in November/December 2008. MTSNAME Paper Abstracts continued