hat
Varyasyon pa bay tèt li pwoblèm navigatè koulye a paske entwodiksyon stationnaire limit la. Li te a nan 1908. Sa yo itilize yon gyroscope fonctionne ki fè tou sa a limit ki tapral pa pou bò nò teknik, men pou tout bon nan nò sou latè a. Yon rapidman fonctionne gyroscope se nan kè gyrocompass a. Yon fwa ke gyroscope a tabli bondi, li rete vers nan menm direksyon, nenpòt moun al machin par batiman an.
eng
Variations do not worry navigators now because of the introduction of the gyroscopic compass. It was invented in 1908. This uses a spinning gyroscope which keeps the compass pointing not to the magnetic north, but to Earth's true North. A rapidly spinning gyroscope is at the heart of the gyrocompass. Once the gyroscope is set spinning, it remains pointing in the same direction, regardless of the ship's heaving motion.