9 years ago Comment at Azimuth and amplitude Azimuth is angle at d earth centre contained btwn true north n d meridian passing thru tht body ...
9 years ago Comment at Azimuth and amplitude Amplitude is d arc of rational horizon or d angle at d centre of d earth btwn the prime vertical n d meridian passing thru d body wen on d horizon (rising or setting) ...
9 years ago Comment at Lights of NUC vessel 2 all round red lights in vertical line, and if making way in addition, sidelights n sternlight ...