Measuring equipment for speed monitoring : functioning and application

Ovaj rad bavi se opremom za mjerenje brzine plovila. Sadrži opise tehničkih karakteristika i funkcionalne primjene brodskih brzinomjera. Kroz kratak povijesni pregled opisane su neke od prvih tehnika za mjerenje brzine broda, poput ručnog brzinomjera i bočnog brzinomjera. Pojašnjen je princip rada rotacijskih, mehaničkih i električnih brzinomjera, te elektromagnetskog, Dopplerovog, hidrodinamičkog, satelitskog i laserskog brzinomjera. Na kraju je dana usporedba i analiza pojedinih modela brzinomjera od nekoliko proizvođača.This paper deals with equipment for measuring vessel speed. It contains descriptions of technical characteristics and functional applications of marine speedometers. A brief historical overview describes some of the first techniques for measuring ship speed, such as the manual speedometer and the side speedometer. The principle of operation of rotary, mechanical and electrical speedometers, as well as electromagnetic, Doppler, hydrodynamic, satellite and laser speedometers is explained. Finally, a comparison and analysis of individual speedometer models from several manufacturers is given