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:
  • Corporate Authors:

    International Periodical Press

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

Media Info

Subject/Index Terms

Filing Info

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