EXPERIMENTAL RESEARCH RELATIVE TO IMPROVING THE HYDRODYNAMIC PERFORMANCE OF OCEAN GOING TUG/BARGE SYSTEMS: PART B, SEAWORTHINESS EXPERIMENTS (CONCEPTS I AND II)

This report presents the results of seaworthiness experiments conducted with two tug/barge concepts. Concept I consists of a tug and barge coupled together to form a rigid body and Concept II permits only relative pitch freedom. Theoretical predictions of Concept II responses are also presented. Some of the more important results of the investigation are: (a) The longitudinal acceleration of the tug pilot house and longitudinal pin force increased considerably, while the vertical pin force showed considerable decrease for Concept II. (b) The relative pitch freedom of Concept II permitted more effective propeller and rudder operation. (c) There is good agreement between linear theory predictions and experimental data for Concept II.

• Supplemental Notes:
  • Four Volume Set available from NTIS as PB-263535; PC $12.50.
• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Bethesda, MD  United States  20084
• Authors:
  • Rossignol, G A
• Publication Date: 1974-8

Media Info

• Pagination: 68 p.

Subject/Index Terms

• TRT Terms: Barges; Ocean going tugs; Seaworthiness; Ship motion; Tug ship interaction; Tugboats
• Old TRIS Terms: Tug barge linkage; Tug barge systems
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00149329
• Record Type: Publication
• Source Agency: Maritime Administration
• Report/Paper Numbers: MA-RD-940-77051 Final Rpt.
• Contract Numbers: 400-28003
• Files: TRIS, USDOT
• Created Date: Apr 13 1977 12:00AM