EVALUATION OF BOTTOM BREAKOUT REDUCTION METHODS

Breakout forces present problems in making retrieval lifts by increasing the lift force requirement, creating a dynamic snap-load in the lifting line, and causing control difficulty during ascent. Three breakout reduction methods are tested using small submersible-sized objects. These methods are: mud suction tubes, water flooding, and air jetting. The results showed that all methods were effective at reducing the breakout force to less than 10% of the wet weight of the object. Diver handling techniques are evaluated and described. Also, a review of three methods which calculate breakout forces is presented.

  • Corporate Authors:

    Naval Civil Engineering Laboratory

    Port Hueneme, CA  USA 
  • Authors:
    • Vaudrey, K D
  • Publication Date: 1972-4

Media Info

  • Pagination: 29 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00035666
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NCEL-TN-1227 Final Rp
  • Files: TRIS
  • Created Date: Oct 27 1972 12:00AM