The Deep Sea Moorings Fishbite Problem
Abstract
Two types of mooring lines are used in deep sea moorings. One is an unjacketed rope of synthetic fiber. When used for towing and mooring, this type has many favorable properties, but it is highly susceptible to cutting. A second type is a line made of synthetic fibers, or metal wires which has been covered with a plastic sheath for purposes of insulation, improved ease of handling, or prevention of corrosion. Evidence gathered to date clearly shows that moorings set far away from continental shores are subjected to severe fishbites. These bites occur from the surface to depths well within the bathypelagic zone, 1000 meters or more. The dimension of the fishbite problem is first reviewed. A data base which spans over twenty years and encompasses hundreds of moorings deployed world wide is used to delineate the space and time dependence of fishbite attacks. Finally the paper reviews the preventive and the curative methods which hopefully can protect mooring lines from the mechanical damage inflicted by fish teeth. Reprints.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1987
- Accession Number
- ADA204427
Entities
People
- Bryce Prindle
- Daniel May
- H. O. Berteaux
Organizations
- Woods Hole Oceanographic Institution