RESILIENT MOUNTING OF DECKHOUSES FOR PUSH-BOATS AND MOTOR CARGO BOATS

Measurements of airborne and structureborne noise levels for various elastic mounting sytems for deckhouses are presented and discussed. The structureborne sound insulation of these deckhouses is compared with that of simple resiliently-mounted engines. Examples of methods adopted to deal with the problem of propeller noise are given and their failure is explained. The most successful method of meeting the 60 dB(A) requirement for a triple-shaft pushboat is also described. By mounting the deckhouse on damped steel springs and the use of floating floors, double walls and suspended ceilings the noise levels inside the accommodation were reduced to between 55 and 47 dB(A). Order from: BSRA as No. 48,238

• Supplemental Notes:
  • Proceedings of the International Symposium on Shipboard Acoustics, held at Noordwijkerhout, September 6-10, 1976.
• Corporate Authors:

  Technisch Physische Dienst TNO-TH

  Stieltjesweg 1, Postbus 155
  Delft 2208,   Netherlands 
• Authors:
  • Ort, A
• Publication Date: 1976

Media Info

• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Cavitation noise; Damping (Engineering); Damping (Physics); Deckhouses; Diesel engines; Measurement; Noise; Noise control; Structural analysis; Vibration
• Uncontrolled Terms: Noise measurement; Noise reduction
• Old TRIS Terms: Deckhouse structures; Diesel noise; Structural vibration; Structure-borne noise
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00177222
• Record Type: Publication
• Source Agency: British Ship Research Association
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Jun 28 1978 12:00AM