The Applied Physics Laboratory (APL) of Johns Hopkins University, under contract by the U. S. Coast Guard, recently developed two Loran-C area navigation/guidance systems for shipboard use. The two systems, COGLAD and C-LAD, are presently undergoing extensive testing aboard Coast Guard cutters along the east coast of the United States. COGLAD was developed primarily to prove the feasibility of precisely guiding a vessel through restricted waterways in real-time and to allow for accurate positioning of navigational aids when visual references are not available. C-LAD is a less complex, inexpensive version of COGLAD designed for large quantity production. This paper deals with the development and field tests of COGLAD and C-LAD. Proposed applications of the equipment are discussed and related to design capabilities and measured performance. A short discussion of recently developed low-cost Loran-C receivers is included since they form a part of the complete system.

  • Supplemental Notes:
    • Presented at the RTCM Assembly Meeting, St. Petersburg, Fla., April 1-3, 1974, with the Propeller Club of the United States. Vol. 1, Papers A-F, Maritime Electronics. Vol. 2, Papers G-N, Maritime Satellite Systems and Maritime Navigation. Vol. 3, Papers O-T, Maritime Telecommunication Trends. Vol. 4, Papers 0A-0I, Maritime Transponders and Collision Avoidance Systems. Sold as a complete 4 volume set for $15.00.
  • Corporate Authors:

    Radio Technical Commission for Marine Services

    /Federal Communications Commission
    Washington, DC  United States  20554
  • Authors:
    • Hassard, R W
  • Publication Date: 1974-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00057085
  • Record Type: Publication
  • Source Agency: Radio Technical Commission for Marine Services
  • Report/Paper Numbers: Symposium Papers N
  • Files: TRIS
  • Created Date: Aug 16 1974 12:00AM