EXPERIMENTAL RESEARCH RELATIVE TO IMPROVING THE HYDRODYNAMIC PERFORMANCE OF OCEAN GOING TUG/BARGE SYSTEMS: PART B, SEAWORTHINESS EXPERIMENTS (CONCEPT III)
This report presents the results of seaworthiness experiments and undocking maneuvers conducted with the concept III tug/barge design. This concept is quite similar to the concept II design in that the same barge and pin location was used and relative pitch freedom was permitted. Some of the more important results of the investigation are: (a) The Concept III forces and moments are larger than those for Concept II, with the vertical and transverse forces showing the largest increase. (b) The Concept III relative pitch, tub pitch and tug/barge roll motions are larger than those of Concept II. (c) Optimum undocking of the tug was only accomplished when the pins were retracted at a point of minimum motion and force, followed by prompt backing of the tug before considerable motion could develop.
- Four Volume Set available from NTIS as PB-263535; PC $12.50.
David Taylor Naval Ship R&D CenterBethesda, MD USA 20084
- Rossignol, G A
- Woo, E L
- Publication Date: 1975-4
- Pagination: 43 p.
- TRT Terms: Backing (Driving); Barges; Driving; Maneuvering; 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;
- Accession Number: 00149330
- Record Type: Publication
- Source Agency: Maritime Administration
- Report/Paper Numbers: MA-RD-940-77052 Final Rpt.
- Contract Numbers: 400-28003
- Files: TRIS, USDOT
- Created Date: Apr 13 1977 12:00AM