Product/Navigation (2) 썸네일형 리스트형 Navigation of Hygrapha (하이그라파 운항보조장비) Navigation and knowledge of the ship's exact position, speed over ground and course made good at any given time have advanced considerably within little more than a few decades, moving from an era of celestial navigation wih sextant, lead, log and lookout to one of electronically aided precision, enabling ships to operate safety almost independently of weather constraints. One argument among ma.. Navigation of Hygrapha (하이그라파 운항보조장비) 이전 1 다음
