A vertex of the navigational triangle is NOT located at the __________.?
A) elevated pole B) celestial body C) zenith D) coaltitude E)NULL
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What is an ebb current?
A) A current at minimum flow B) A current coming in C) A current going out D) A current at maximum flow E)NULL
Which is NOT a contributing cause of ocean currents?
A) Surface winds B) Density differences in the water C) Underwater topography D) Gravitational effects of celestial bodies E)NULL
The place where a channel moves from along one bank of the river over to the other bank of the river is called a __________.?
A) draft B) cutoff C) draw D) crossing E)NULL
You must construct a Mercator projection for an area bounded by latitudes 40° – 47°N and longitudes 176°E to 176°W on a paper 28 X 36 inches. Allow a neat line of one inch. What will be the separation between meridians?
A) 3.190 inches B) 3.249 inches C) 3.529 inches D) 3.714 inches E)NULL
Information on northern right whales can be found in __________.?
A) the Coast Pilot B) HO 229 C) the Nautical Almanac D) Ship’s Medicine Chest and Medical Aid at Sea E)NULL
A tropical wave is located 200 miles due west of your position, which is north of the equator. Where will the wave be in 24 hours?
A) Farther away to the west B) Farther away to the east C) In the same place D) Closer and to the west E)NULL
To make sure of getting the full advantage of a favorable current, you should reach an entrance or strait at which time in relation to the predicted time of the favorable current?
A) One hour after B) At the predicted time C) 30 minutes before D) 30 minutes before flood, one hour after an ebb E)NULL
What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?
A) Color and shape B) Size C) Method of construction D) Signal characteristics E)NULL
The white lights in a vertical line on a multiple-span bridge indicate __________.?
A) the main channel B) the draw span is inoperable C) the river is obstructed under that span D) scaffolding under the span is reducing the vertical clearance E)NULL