Evaluation of Bottom Breakout Reduction Methods
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1972
- Accession Number
- AD0743880
Entities
People
- Kennon D. Vaudrey
Organizations
- Naval Facilities Engineering Service Center