You are informed of defects or changes in aids to navigation by __________.?
A) Local Notice to Mariners B) Weekly Notice to Mariners C) marine broadcasts D) All of the above E)NULL
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When the index and horizon mirrors of a properly adjusted sextant are at an angle of 45° to each other, the arc reads __________.?
A) 22 1/2° B) 45° C) 60° D) 90° E)NULL
When a warm air mass overtakes a cold air mass, the contact surface is called a __________.?
A) line squall B) water spout C) cold front D) warm front E)NULL
At 0000 you fix your position and plot a new DR track line. At 0200 you again fix your position and it is 0.5 mile west of your DR. Which statement is TRUE?
A) The set is 090°, drift 0.5 knot. B) The set is 270°, drift 0.25 knot. C) The set is 270°, drift 0.5 knot. D) The set is 270°, drift 1.0 knot. E)NULL
While steering a course of 150°T, you wish to observe the Sun for a speed check. What would the azimuth have to be?
A) 000°T B) 090°T C) 150°T D) 240°T E)NULL
On 25 December 1981 you observe the Sun’s lower limb. The sextant altitude (hs) is 4°06.9′. The height of eye is 47 feet and the index error is 1.6′ on the arc. The temperature is 19°F. and the barometer reads 1030.8 millibars. What is the observed altitude (Ho)?
A) 3°57.4′ B) 4°01.9′ C) 4°02.5′ D) 4°03.4′ E)NULL
In North America the majority of the weather systems move from __________.?
A) north to south B) south to north C) east to west D) west to east E)NULL
An air mass that has moved down from Canada would most likely have the symbols __________.?
A) mPk B) cPk C) cTk D) cTw E)NULL
The navigator is concerned with three systems of coordinates. Which system is not of major concern?
A) Terrestrial B) Ecliptic C) Celestial horizon D) Celestial equator E)NULL
If you are sailing from the East Coast of the United States to the Caribbean Sea, which publication would contain information on weather, currents, and storms?
A) Sailing Charts of the Caribbean Sea B) Pilot Charts of the North Atlantic C) Light Lists, Atlantic and Gulf Coast D) Tidal Current Tables E)NULL