Abstract
ABSTRACT Small Waterplane Twin Hull (SWATH) vessels exhibit superior seakeeping capabilities in rough water, which render them more capable than monohull ships for many missions. SWATH vessels are currently in use for a variety of acoustic missions, including oceanographic research and surveillance, which render it necessary to assess and minimize underwater noise generated by the ship. In addition, potential future missions such as anti‐submarine warfare require the development of quiet SWATH ships. A wide range of acoustic and vibration data are needed to support the design and construction of SWATH ships with acoustic missions.A number of acoustic tests and trials have been conducted on USNS Victorious (T‐AGOS 19) Class ships. During these tests, several innovative acoustic and vibration measurement and analysis techniques were used to identify, investigate and correct a number of acoustic deficiencies. This paper provides an overview of these trials and the acoustic‐deficiency correction process. Personnel from a variety of organizations worked as a focused team to provide the technical and implementable solutions necessary to improve the acoustic characteristics of the T‐AGOS 19 class. Additionally, the results of a diagnostic acoustic trial conducted on the Victorious are prepared and discussed in terms of the unique platform acoustic characteristics found on SWATH ships.
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