Guideline Systems for Deep-Sea Deployments.
Abstract
A guideline is a mechanical cable stretched between the surface and the seafloor to direct a suspended payload to a seafloor site. Two series of sea tests were conducted: one at the 600-foot depth and the other at the 4,500-foot depth. The results of these two sea tests have shown that, after the lift line and the guideline are sufficiently uncoupled from surface excitation, single and double guideline systems can be operated in water depths to at least 4,500 feet without serious entanglement problems. Payload rotation produced during the deployment test was found to be small and results from variations in static forces. The design of guideline hardware and at-sea handling is discussed. In addition to surface motion compensation, a means for releasing in-line torque must be provided to achieve entanglement-free operations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1974
- Accession Number
- ADA004931
Entities
People
- Francis C. Liu
Organizations
- Naval Facilities Engineering Service Center