A.makes no change at all
B.is somewhat lower than it would be for winds from a northern quadrant
C.is uncertain and may fluctuate by increasing and decreasing
D.is somewhat higher than it would be for winds from the northern quadrant
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A.logs must be kept in an orderly manner
B.erasures are not allowed
C.it must identify the vessel's name and official number
D.All of the above
A.the Sailing Directions and the Coast Pilot
B.a weather fax
C.the Local Notice to Mariners
D.the Light List
A.a break-glass and pull-cable system
B.electrical controls on the bridge
C.a mechanical arm outside the vent duct
D.the heat of a fire melting the link
A.at an airport
B.on a naval mine-countermeasures vessel
C.Block Island North Light
D.on a vessel engaged in public safety activity
A.Nimbostratus
B.Altostratus
C.Cumulonimbus
D.Cirrus
最新試題
How can you estimate the position of a tropical storm’s center?（）
Guide tolerances during elevation of the jack-up rig will（）.
Hot air can hold（）.
How does a coast radio station communicating by HF radio normally identify itself?（）
Halon fire extinguishers are NOT effective when used on which types of fires?（）
Handholds or straps on the underside of an inflatable liferaft are provided（）.
General information on enroute weather and climate is found in（）.
High clouds，composed of small white flakes or scaly globular masses，and often banded together to form a “mackerel sky”，would be classified as（）.
Great Salt Pond on Block Island is（）.
Given the same water depth and line tension，the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90 pound/foot chain mooring system will be（）.