08/17/2022
WAAS satellite #51 has been replaced with #48. We have redone our article on WAAS to reflect this. Important to know if you want to get the best GPS accuracy.
WAAS and EGNOS: Satellite-Based (GPS) Augmentation Systems (SBAS)
Outdoors with a clear view of the sky, we turn on the GPS and in seconds get a fix, and only periodically do we pause to be amazed at how ac...
08/07/2022
Just realized this application of a special feature of qtVlm. (3-min video)
Dual Screen Simulation in qtVlm
We use the Save View option from qtVlm to illustrate the types of comparisons we might use in a dual screen display. First we compare a large scale and smal...
06/12/2022
Paper charts being discontinued. These San Juan Island charts marked LE (last edition) will be gone on Oct, 2022, to be replaced by their ENC counterparts. We recommend mariners look into our new course on the use of ENC. These vector charts include much more information, but there are notable differences on how we read them: https://www.starpath.com/catalog/courses/1926.htm
06/09/2022
Our lead cel nav instructor Steve Miller will be out taking photos. Use Chrome for auto translation.
La Lettre d’information de l’IMCCE
La Lettre d’information de l’Institut de mécanique céleste et de calcul des éphémérides (IMCCE) de l’Observatoire de Paris
06/05/2022
USCG Navigation Center (navcen) has an all new web page. Seems pretty well organized. Google "navcen" usually finds it.
U.S. Coast Guard Navigation Center
USCG Navigation Center
05/30/2022
Seattle's new and successful Maritime High School is now taking applications for next year.
How to Apply - Maritime High School
How to Apply - Maritime High School will focus student learning on the environment, marine science, and maritime careers working on or near the water.