The ice-going capability and restrictions imposed on small vessels travelling in the ice of the Baltic Sea are studied. A large data set was obtained by interviewing ship operators about their experiences navigating through ice. All the main types of small vessels which operate in ice conditions are represented in the study: patrol boats, cutters, fairway supply vessels, coastal service ships, oil recovery vessels, cargo/supply ships and tugs. Interviews of ship operators were conducted by a questionnaire covering the topics of: vessel operation in different ice conditions; the main operational restrictions which apply; critical operation conditions; dimensioning of structures; and ice damage. During six of the visits, test runs were made in the vessel being visited. The report presents both the direct answers given by the ship operators and tables summarizing these answers. Published research work on full-scale and model tests of small vessels in ice conditions were collected. Tests conducted were found in the main to be performance tests in level ice, measurements of hull ice load, or measurements of propulsion machinery ice load. Ice test data from 14 small vessels is presented.

  • Supplemental Notes:
    • Technical Research Centre of Finland, VTT Research Notes 1717, Dec 1995 [137 p]
  • Authors:
    • Kivimaa, S
    • Jalonen, R
  • Publication Date: 1995


  • Finnish

Subject/Index Terms

Filing Info

  • Accession Number: 00727505
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 1 1996 12:00AM