DESIGN OF TUGS FOR COASTAL AND HARBOUR ICEBREAKING DUTY

This article is intended as a check-list for owners or consultants considering new designs for coastal and harbour icebreaking tugs. Among the points mentioned or briefly discussed are: choice of hull lines; ice-cutting blades and ice spurs; hull strengthening; main machinery and torque requirements; ship displacement; cooling-water intakes; steering gear and rudder; cp propellers and overload protection; fitting of ice fins aft; adequate lighting (standby generator sets must start instantly); bridge layout and equipment; insulation from noise; adequacy of heating-boiler; range of "trimability," with tanks located away from danger of freezing; machinery air-intakes; safety of personnel walking on deck; bollards; and stability when the vessel is heavily iced.

• Corporate Authors:

  Reed (Thomas) Industrial Press Limited

  36/37 Cock Lane, Saracen's Head Building
  London EC1A 9BY,   England 
• Authors:
  • Nordenbrink, N I
• Publication Date: 1976-12

Media Info

• Pagination: p. 45-46
• Serial:
  • Ship and Boat International
  • Volume: 29
  • Issue Number: 12
  • Publisher: Reed (Thomas) Industrial Press Limited

Subject/Index Terms

• TRT Terms: Harbors; Icebreakers; Icebreaking; Tugboats; Vehicle design
• Uncontrolled Terms: Ship design
• Subject Areas: Design; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00157994
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Aug 31 1977 12:00AM