The nocturnal is a navigational instrument that was first invented in the 16th Century. By focusing on the stars it can estimate the time to within 10-15 minutes. The outer edge of the instrument ...

MagTronic Interface Modules, made by E.S. Ritchie & Sons, now make it possible for every skipper to have the gyro features enjoyed by larger vessels with simpler operation at reportedly a fraction ...

Roger Revelle is equipped with an extensive suite of navigation and communications instruments and devices. This equipment allows precise navigation and control of the ship and worldwide ...