PROBABLE ORIGIN OR MEASURED SUPERTANKER RADIATED NOISE SPECTRA

This paper deals with initial measurements of the acoustic pressure levels radiated by the modern and largest merchant ships -- the supertankers, greater than 100 thousand DWT, in the frequency band 2 to 80 Hz. Those shaft and blade rate lines detected are converted to source pressure levels (SPL) in dB// mu Pa at 1m. For some selected lines a typical radiation pattern is constructed. A comparison is made of the measured and calculated blade rate tonals and a discussion is presented on several mechanisms for the enhancement of their harmonics.

• Supplemental Notes:
  • Oceans '77 Conference Record Third Annual Combined Conference, Los Angeles, California, October 17-19, 1977.
• Corporate Authors:

  Institute of Electrical and Electronics Engineers (IEEE)

  3 Park Avenue, 17th Floor
  New York, NY  United States  10016-5997

  Marine Technology Society

  5565 Sterrett Place, Suite 108
  Columbia, MD  United States  21044
• Authors:
  • Cybulski, J
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Acoustic radiation; Measurement; Noise; Sound transmission; Spectrum analysis; Supertankers; Tankers
• Uncontrolled Terms: Noise measurement
• Old TRIS Terms: Sound radiation
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00178985
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: 77CH1272-4 OEC
• Files: TRIS
• Created Date: Aug 19 1978 12:00AM