Mainstay Systems, Inc.

Marvin L. Schenker

Marine Compass Adjuster
Captain, USN (Ret)
Licensed Master, USCG


Despite modern electronic navigation systems, the magnetic compass remains the basic and most reliable navigation instrument on your vessel. Have the confidence of a well adjusted, accurate compass.

I am interested in and knowledgable about many aspects of marine navigation. My backround includes 27 years of active duty in the U.S. Navy, navigation officer of two navy warships (diesel and nuclear powered submarines), and helping to manage a freighter shipping company and a marine electronics firm. I've spent numerous years of recreational time crewing and skippering racing sailboats, including extensive experience navigating ocean racing sailboats. Most recently, located in S E Florida, I have made an avocation of compass adjusting, frequently assisting boaters, yachtsmen, and the skippers of ocean going ships with "swinging" their vessels to measure and correct magnetic compass deviation. I enjoy discussing compasses and other marine navigation subjects. Let me have your comments or questions.

Offering professional compass adjustment on your ship, yacht or other vessel. Specializing in SUN AZIMUTH method. Magnetic and electronic (fluxgate) compasses compensated. Serving Miami/Ft Lauderdale, Florida and the South Florida area. Prices reasonable. Will travel. Please contact me to discuss any compass problem, to schedule an adjustment or to set up a compass repair.

If you have a nautical website and would like to consider a link, let me know.

Miami, Florida
compass@schenker.net