NEW RUSSIAN ARCTIC REGULATIONS VERSUS CASPPR

The principles assumed as a basis by the Register Rules and CASPPR for the requirements for ice strengthening of ship's hulls differ considerably. The CASPPR are based on "Regulations Respecting the Prevention of Pollution of the Arctic Water" (1972), while the Russian Register Rules are assumed as minimum requirements for the safety of ships during their operations in ice. The principles for the calculation of ice loads are also different. In CASPPR (1972), designed ice loads do not depend on ship dimensions, the form of the hull, etc. They are constant within each class. The designed ice loads of the Register Rules depend not only on the ice class (category), but also on hull form and displacement of ships. In spite of these differences, the sizes and extent of the ice strengthening for ships operating in similar ice conditions (L1, UL, ULA - Russian Register Rules, 1 - 3 - CASPPR) have insignificant differences; which is why these ice classes may be considered as equivalent to each other. The main principles of both the classification and calculations of the ice loads as well as the sizes of frames and shell plating were considerably changed in the new CASPPR proposals. The ice loads determined by these Rules depend on the displacement and form of the hull. These, however, differ considerably from the corresponding values determined by the Russian Register Rules. These differences are the focus of this paper.

• 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 C [10 p, 3 tab, 2 fig]
• Authors:
  • Karavanov, S B
  • Glebko, Y V
• Publication Date: 1994

Language

• English

Subject/Index Terms

• TRT Terms: Design load; Hulls; Ice; Loads; Operating rules; Regulations; Strength of materials
• Old TRIS Terms: Hull form; Ice loads; Ice strengthening
• Subject Areas: Law; Marine Transportation; Railroads;

Filing Info

• Accession Number: 00708290
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM