Tuesday, October 9, 2018


 Loran (long-range navigation) land-based system of radio navigation first developed at Massachusetts Institute of Technology during World War 2 for military ships and aircraft located within 600 miles (about 970 km) of the American coast. In the 1950s a more accurate (within 0.3 mile [0.5 km]), longer-range system (over 2,000 miles [3,200 km]), known as Loran-C, operating in the 90–110 kilohertz range, was developed for civilian use, and the original loran (renamed Loran-A) was phased out.   Eventually, Loran-C was extended to cover most of the continental United States and, in cooperation with Canada and Russia, Canadian waters and the Bering Sea.


Tuesday, October 2, 2018



  In our museum you can always find something unique and interesting like this compass, which was a great innovation in the 19th century. It was invented by famous American physicist  Edward S. Ritchie. It comes with six needles and a flat card with central buoyancy and it’s filled with liquid. Compass is air tight in metallic case and it could be read at a distance so it would not be affected by any iron on or about the deck of a ship. Special features help in keeping liquid in one place and prevent oxidizing of magnet or card. One that you can see on a picture was made in 1910 for US NAVY and it comes with their exclusive number.