A CALCULATOR PROGRAM FOR MIXING MERCATOR AND GREAT CIRCLE SAILINGS

The Navigation Department, Defense Mapping Agency Hydrographic/Topographic Center (DMAHTC) has developed a calculator program, self-contained on one magnetic card, which automatically determines course, distance, and total run in Mercator and Great Circle Sailings. This program will list Great Circle positions every 10 deg of longitude and then print course and distance for each leg. Labels designating latitudes and longitudes, and program sections are also shown. The entire program is controlled by six label keys and can be shifted between Mercator and Great Circle at will. It is prepared on a programmable TI-59 with Marine Navigation Module software and printer capability. The program is in use at DMAHTC for compiling distance tables, and navigational publications and answering public inquiries. The following data are incorporated in this article: General Information, Mercator Computation, Great Circle Computation, Great Circle Positions, Great Circle Course Computation, Program Data, and Special Considerations. (Author)

Supplemental Notes:
- Availability: Microfiche copies only.
Corporate Authors:
Department of Defense

Mapping Agency Hydrographic/Topographic Center
Washington, DC United States 20301
Authors:
- Ulrich, J G
Publication Date: 1980-9

Media Info

Pagination: 22 p.

Subject/Index Terms

TRT Terms: Calculation; Calculators; Computer programs; Length; Location; Navigation charts; Navigation computers; Navigation systems; Position fixing; Railroad tracks; Ship pilotage; Ships
Uncontrolled Terms: Latitude; Longitude
Old TRIS Terms: Chart navigation; Computations; Computer programs (Navigation systems); Position finding; Surface navigation
Subject Areas: Marine Transportation; Operations and Traffic Management; Railroads; Vehicles and Equipment;

Filing Info

Accession Number: 00318548
Record Type: Publication
Source Agency: National Technical Information Service
Files: TRIS
Created Date: Oct 27 1980 12:00AM