The Bullwinkle jacket was loaded onto a launch barge using a conventional skidding operation. The size (over 1365 feet long), weight (approximately 50,000 tons) -, and stiffness characteristics of this jacket made it necessary to control relative deflections during loadout to a high degree of accuracy. Computer analyses were performed to determine the requirement of the fabrication yard and launch barge support structures which would assure no overstressing of jacket components during the loadout operations. A computer assisted survey/data gathering system was used to compare the jacket/barge deflections during loadout to the predicted and allowable values. A summary of the analyses, the survey/data gathering system, and their combined function is given in this paper. A comparison of the actual jacket/barge behaviour to the predicted and allowable behaviour is discussed. It is concluded that through the use of information and confidence gained from the analyses and on-site survey/data comparison system described in this paper, many cost saving operation/construction techniques were implemented on items associated with the jacket and the fabrication-yard skidway.

  • Supplemental Notes:
    • "OTC '89", 21st Annual Offshore Technology Conference held Houston May 1-4 1989, Vol. 3, p.469 [10 pp., 3 ref., 8 fig.]
  • Authors:
    • Piter, E S
    • Digre, K A
    • Tabone, R M
  • Conference:
  • Publication Date: 1989


  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00716206
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Feb 28 1996 12:00AM