PROPULSIVE PERFORMANCE OF SHIPS IN IRREGULAR SEAS

A method is presented for estimating the propulsive performance of ships in irregular seas and in particular the direct speed loss due to added resistance in waves. The procedure takes into account the characteristics of the prime mover(s), transmission system(s), propulsor(s) and both hydrodynamic and aerodynamic drags for a specific ship and solves for the mean values of attained ship speed, shaft speed and propeller thrust and torque for a prescribed engine fuel rate in a given wave and wind environment. The paper concludes with several recommendations aiming to improve the prediction method and rendering it more useful for analytic, model and full-scale studies.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0020868X
• Corporate Authors:

  International Periodical Press

  193 Heemraadssingel
  Rotterdam,   Netherlands 
• Authors:
  • Vassilopoulos, L
• Publication Date: 1971-4

Media Info

• Features: Figures; References;
• Pagination: p. 161-177
• Serial:
  • International Shipbuilding Progress
  • Volume: 18
  • Issue Number: 200
  • Publisher: IOS Press
  • ISSN: 0020-868X
  • Serial URL: http://www.iospress.nl/journal/international-shipbuilding-progress/

Subject/Index Terms

• TRT Terms: Engine efficiency; Performance; Propulsion; Vehicle power plants; Wave resistance; Waves
• Old TRIS Terms: Irregular waves; Propulsion machinery; Propulsive efficiency; Propulsive performance
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00019618
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: Nov 25 1973 12:00AM