A.difference between the true course and the compass course B.momentum of a vessel after her engines have been stopped C.lateral movement of a vessel downwind of her intended course D.displacement of a vessel multiplied by her speed
单项选择题Depiction of TSS's on charts uses()as the primary color.
A.magenta B.deep red C.bright red D.red
单项选择题A buoy with a composite group-flashing light indicates a(n)().
A.anchorage area B.fish net area C.bifurcation D.dredging area
单项选择题A buoy marking a wreck will show a(n)().
A.white light FL (2) and a topmark of 2 black spheres B.occulting green light and may be lettered C.yellow light and will be numbered D.continuous quick white light and may be numbered
单项选择题A buoy having red and green horizontal bands would have a light characteristic of().
A.interrupted quick flashing B.composite group flashing C.Morse (A) D.quick flashing
单项选择题A bold reef is a reef().
A.with part of it extending above the water B.that can be detected by water turbulence C.that drops off sharply D.perpendicular to the current