A) matching pulse rates of at least 20 stations B) an automatic on-and-off switch C) a horizontal matching of all delayed hyperbolic signals D) automatic signal acquisition and cycle matching E)NULL
A) red B) white C) blue D) black E)NULL
A) a landfall B) the extreme end of an islet C) a mid-channel D) a center line E)NULL
A) Card B) Needle C) Lubber’s line D) Gimbals E)NULL
A) during day time observations only B) during twilight observations only C) at all times D) when observed at altitudes of less than 25° E)NULL
A) instrument error B) augmentation C) semidiameter D) parallax E)NULL
A) relative bearing B) range line C) track line D) estimated position E)NULL
A) red or green to conform with the other lateral aids B) red and green horizontally-striped C) solid yellow D) white with orange marks E)NULL
A) gnomonic curve B) small circle C) meridian D) great circle E)NULL
A) Mid-channel buoy B) Unlighted nun buoy C) Lighted green buoy D) All of the above E)NULL