Marine Traffic Data of Southern California.
Abstract
Data was recorded on the marine traffic and VHF-FM marine communications channel usage along the southern California coast during the period of 31 January 1977 to 13 March 1977. The marine traffic data was recorded by means of time-lapse photography of a radar display at Long Beach, Port Hueneme, Point Conception, and San Diego. Recordings were made of the communications on VHF-FM maritime mobile Channels 13 and 16 as received at the sites. The daily average of the marine traffic, including large, medium, small, tugs-in-tow, and military vessels at Long Beach was 69, at Port Hueneme was 61, at Point Conception was 19, and at San Diego was 98 vessels. During the data collection period the majority of the vessels appeared to utilize the Traffic Separation Scheme where warranted. Approximately 720 hours of communications on VHF-FM Channels 13 and 16 were recorded and monitored to determine channel efficiency and utilization. Channel 13 efficiency/utilization at Long Beach was 49.4%/3.68%, at Port Hueneme was 33.9%/0.79%, at San Diego was 90.1%/3.39%. Channel 16 efficiency and utilization at Long Beach was 61.6%/16.17%, at Port Hueneme was 64.9%/12.69%, at Point Conception was 66.5%/5.04%, at San Diego was 70.6%/8.62%. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1978
- Accession Number
- ADA062431
Entities
People
- B. H. Charters
- D. E. Watson
- G. A. Napert
- J. J. Cherny Iii
- R. A. Silva
Organizations
- [Means, goals and clinical aims of physioradiological methods of examination.]