Deep-Ocean Biodeterioration of Materials. Part 6. One Year at 2,370 Feet.
Abstract
As Part VI of a series of reports on the biological deterioration of materials in the deep ocean, this report covers the data obtained after exposing metallic and nonmetallic specimens for 03.4 months on the floor of the Pacific Ocean at a depth of 2,370 feet (Test Site II). The specimens were attached to a Submersible Test Unit that was emplaced in April 0965 and retrieved in May 1966. Preliminary examination of the specimens was made abdard ship, and the final examination, tests, and analyses were performed at the Naval Civil Engineering Laboratory. On recovery, most of the plastic materials and all of the rope specimens were covered with bacterial slime. Cotton and manila rapes were severely deteriorated by marine microorganisms. Wood panels, certain plastics, and manila ropes were attacked by molluscan borers. Some of the plastics were attacked by borers directly from seawater environment without the aid of wood bait pieces. Hydroids and tubeworms were found on metal panels. Sea anemone, snails, and crabs were also found attached to various test panels. The surface of a silicone rubber electrical cable insulation was deteriorated by same marine organisms. Typical fouling organisms such as barnacles and bryozoa were not found. Glass, elastomers, and certain plastics were not adversely affected. Data from evaluation of these specimens are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1967
- Accession Number
- ADA306391
Entities
People
- James S. Muraoka
Organizations
- Naval Facilities Engineering Service Center