Loewenthal Compass Adjustments established early 2005 servicing commercial, government and private vessels in the Gulf Coast Region include Nationwide East and West Coasts. Requests for magnetic compass calibrations anywhere in the USA and its territories. I have over 40 years in the marine industry from commercial fishing, yachting, US Naval Service on ships, and retiring after sailing on many ships worldwide with the US Coast Guard. I inspect, calibrate and issue certified deviation tables for every vessel that is swung.