MODEL TESTS OF A SMALL ICEBREAKER

Designing an icebreaker is more complex than a normal merchant ship due to the numerous difficult performance items that must be estimated. If the ship is intended to cruise in both open and icy seas, the task is even more difficult. Since the 1970s, it has been standard practice to conduct scale-model tests in an ice tank to help predict these design factors. Over the last 6 years, systematic model tests on a scale-model icebreaker have been carried out, and the necessary comparative data to design a small icebreaker has been obtained. This paper presents these test results. In addition to the standard ice resistance tests, they include backing performance, turning capability as a function of rudder area/heel and fishing-vessel towing ability. Means of minimizing propeller-ice interaction in the bilge keels/propeller ducts/ice fins/deflecting ribs were also examined.

• Supplemental Notes:
  • Icetech '94, 5th Intl Conf on Ships and Marine Structures in Cold Regions; 16- 19 March 1994; Calgary, Canada. Pprs. Pub by SNAME, Arctic Section, Calgary, Canada. Ppr I [9 p, 6 ref, 4 tab, 8 fig]
• Authors:
  • Shigematsu, S
  • Yoshikai, K
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Ice; Icebreakers; Propellers; Resistance (Mechanics)
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Ice resistance; Propeller ice interaction
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00708408
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM