Abstract: An extensive full scale performance evaluation of the USNS 17CTORIOUS T-AGOS 19 was undertaken by the ship design community to validate the hydrodynamic performance capabilities of this Small Waterplane Area Twin Hull (SWATH) ship To assess the performance characteristics of the hull form, sensors, signal conditioning instrumentation, and data acquisition computer systems were installed on hoard. Real-time characterization of the seaway during trial operations represented a key element in the overall evaluation of the rough water performance of this SWATH ship, as would also he the ease for many other surface ships. During this full scale trial program the seaway was quantified through wave height measurements made at the how of the ship using a commercially available ship-borne wave height sensor. The major advantages of using a ship-horne wave height sensor include: measurement of seaway parameters in seas too severe to launch a buoy, reduced trial dawn-time associated with buoy launch and recovery, and an increase in collection time of seaway data available at zero speed as well as underway. A wave height buoy was also employed on several occasions primarily for comparison with the ship-horne wave height measurements. The comparisons of ship-home wave height measurements with wave buoy measurements show reasonable agreement and provide confidence in the overall accuracy of the wave height measurements. For comparison, wave spectra measured during the trials are also presented along with a theoretical Bretschneider spectrum at approximately the same significant wave height and modal period. The results indicate good agreement between the wave spectra derived from data measured using the ship-home sensor and what is expected in a theoretical spectral formulation of a well developed seaway
Publication Year: 1997
Publication Date: 1997-10-01
Language: en
Type: article
Indexed In: ['crossref']
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