Accession Number:

ADA141995

Title:

Model Tests in Ice of a Canadian Coast Guard R-Class Icebreaker

Descriptive Note:

Special rept.

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

• Tatinclaux, J. C.

Report Date:

1984-04-01

Pagination or Media Count:

32.0

Abstract:

This report presents the results of resistance and propulsion tests in level ice of a 120-scale model of the R-class icebreaker of the Canadian Coast Guard. On the basis of the model test results, full-scale performance is predicted and compared with available full-scale trials data. Predicted ice resistance and required propeller rpm, thrust and delivered power are lower than full-scale measurements. This disagreement was attributed to the fact that the ship model had a much lower ice friction coefficient than the prototype. On the other hand, predictions of thrust and power for a given ship speed and propeller rpm are in good agreement with corresponding full-scale measurements.

Descriptors:

• *ICEBREAKERS
• CANADIAN EQUIPMENT
• ICE
• MARINE PROPULSION
• MODEL TESTS
• PERFORMANCE(ENGINEERING)
• RESISTANCE
• SHIP HULLS
• WATER

Subject Categories:

• Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE