• Enter up to 32,000 waypoints per file using GPS and/or Loran data.
• GPS Lat/Lon waypoints are accepted and displayed in a variety of formats such as: degrees, degrees/minutes, and degrees/minutes/secs.
• Display Lat/Lon or loran with a variable number of decimal places.
• Convert from Loran to Lat/Lon (GPS) and visa versa. Precision calibrate the conversions using local knowledge.
• Along with each waypoint you can include a Name, Rating, Description, Color, Icon, Depth, and Comments.

• waypoints can be given distinctive colors on listings and/or graphics.
• Sort your waypoints by numericvally or alphabetically
• Display list in one of many pre formatted or user customized spreadsheet styles:

• Show waypoints on simple charts, NOAA charts, or 2-D Bathymetric Charts.
• Display waypoints on charts as Names, dots, symbols, or waypoint numbers.
• Pan and zoom simple chart anywhere, and in any scale.
• Center the chart on any reading.
• Expand any portion of the chart.
• Selectively include Lat/Lon lines and/or Loran lines and a coastline.
• Get details on any reading on chart.
• Your choice of color (on screen and printer) for chart lines and waypoints.
• Labels and symbols can be included on charts.
• Alternate black background for night time viewing.
• Upload or download a variety of GPSs using serial port or USB connection
• Import or export a large variety of data file formats for compatability with other programs and GPSs.
• Harvest sonar log data easily

E-mail us for information on how to obtain a demo program.
We've Been Published

These reviews show that the program has been around a while. They are scans of the magazine pages. These reviews will be launched in a new browser window. When you're finished reviewing them, simply close the window and you'll be back on our site.

Sport Fishing June 05.1 (549k)
Sport Fishing June 05.2 (659k)
Sport Fishing June 05.3 (626k)
Sport Fishing June 05.4 (641k)
Sport Fishing June 05.5 (641k)

Bill Brogden on Conversion (link)

Florida Sportsman July 2002.1 (745k)

Florida Sportsman July 2002.2 (750k)

Boats.com: The Conversion Experience

Power & MotorYacht: PC or Plotter?

Sport Fishing Feb.,97 (105K)

Sport Fishing Sept/Oct,94.1 (124K)

Sport Fishing Sept/Oct,94.2 (55K)

Salt Water Sportsman Nov., 90.1 (171K)

Salt Water Sportsman Nov., 90.2 (103K)

Company History

The Andren Software Co. has been publishing this program since 1986 and has incorporated many features requested by users.  The program gets rewritten every few years to take advantage of the enhanced capabilities of new Windows versions and to add substantial improvements in the operation of the program. We always strive to make the program useable by those who have little knowledge of computers or have no feeling for loran or GPS.  The program comes with a 24 page manual edited by Carol Andren for clarity and understanding. 

Carl Andren, the creator of this program, is a member of the Institute of Navigation, the International Loran Association, and the Institute of Electrical and Electronic Engineers. He holds 25 patents in electronics including some on the IEEE 802.11 technology known as WiFi. 

Some of the improvements from previous versions are: more uploading and downloading for some popular GPSs, better backup and restore, more import/export routines, and most importantly, a precision calibration capability. This allows the user to calibrate the loran to GPS conversion to close to the original Loran accuracy using local reference points. The latest improvement is the addition of three more data fields for Chart Plotter Name, Icon, and Depth.