When a warm air mass is adjacent to a cold air mass, the separation line between the two is called a(n) __________.?
A) front B) isobar C) isotherm D) equipotential line E)NULL
Soru Kategorisi Güverte
Buoys which mark isolated dangers are painted with alternating _____________ .?
A) red and black bands B) green and black bands C) red and white stripes D) green and white bands E)NULL
The gyrocompass error resulting from your vessel’s movement in OTHER than an east-west direction is called __________.?
A) damping error B) ballistic deflection C) quadrantal error D) speed error E)NULL
Fog is likely to occur when there is little difference between the dew point and the __________.?
A) relative humidity B) air temperature C) barometric pressure D) absolute humidity E)NULL
The southeast trade winds actually blow toward the __________.?
A) southeast B) south C) east D) northwest E)NULL
Severe tropical cyclones (hurricanes, typhoons) occur in all warm-water oceans except the __________.?
A) Indian Ocean B) North Pacific Ocean C) South Pacific Ocean D) South Atlantic Ocean E)NULL
The charted channel depth at Eastport, ME, is 28 feet. You are drawing 31.5 feet and wish 2 feet clearance under the keel. What is the earliest time after 1700 DST (ZD +4), on 6 September 1983, that you can enter the channel?
A) 1803 B) 1815 C) 1921 D) 2208 E)NULL
What condition exists at perigee?
A) The Earth is farthest from the Sun. B) The Earth, Sun, and Moon are in line. C) The Earth, Sun, and Moon are at right angles. D) The Moon is closest to the Earth. E)NULL
When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. This process is called __________.?
A) checking a light B) raising a light C) obscuring a light D) bobbing a light E)NULL
It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at least every __________.?
A) hour B) 3 hours C) 6 hours D) 8 hours E)NULL