1 decades ago Comment at What do you understand by gha , sha and first point of aries gha-it is angle at celestial pole contined between celestial meridain passing through greenwich and observer measured westerly.
sha-it is westerly anle at celestial pole measured between first ...
2 decades ago Comment at Lights of NUC vessel there will be two red liht plus all navigatinal light ...
2 decades ago Comment at What do you understand by t & p notices temporary notice are given when some information exist on chart for some short time . and prelimry notice are given when in future there will some work will take place in future ...
