Descending boats, while awaiting their turn to enter a lock, shall NOT block traffic from the lock. They shall be above the lock by at LEAST __________.?
A) 100 feet B) 200 feet C) 300 feet D) 400 feet E)NULL
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A HYDROLANT warning would normally be sent for all of the following EXCEPT __________.?
A) extinguishment of Robbins Reef Light in New York City’s Upper Bay B) unexploded ordinance in ocean waters at a depth of 78 fathoms (143 meters) C) the presence of a large unwieldy tow in congested offshore water D) a…
The speed at which an ocean wave system advances is called __________.?
A) wave length B) ripple length C) group velocity D) wave velocity E)NULL
The direction a vessel is pointed at any given time is the __________.?
A) course B) track C) heading D) course over the ground E)NULL
The chart indicates the variation was 3°45’E in 1988, and the annual change is increasing 6′. If you use the chart in 1991 how much variation should you apply?
A) 3°27’E B) 3°27’W C) 3°45’E D) 4°03’E E)NULL
The GMT is 0445 and your zone description is +1. Your zone time is __________.?
A) 445 B) 345 C) 545 D) 1545 E)NULL
Set of the current is __________.?
A) its velocity in knots B) direction from which it flows C) estimated current D) direction towards which it flows E)NULL
The principal purpose of magnetic compass adjustment is to __________.?
A) reduce the variation as much as possible B) reduce the deviation as much as possible C) reduce the magnetic dip as much as possible D) allow the compass bowl to swing freely on its gimbals E)NULL
Coral atolls, or a chain of islands at right angles to the radar beam, may show as a long line rather than as individual targets due to __________.?
A) the effects of beam width B) limitations on range resolution C) the pulse length of the radar D) the multiple-target resolution factor E)NULL
What will be the velocity of the tidal current 1.0 mile southwest of Lewis Pt., RI, at 1501 EST (ZD +5) on 4 April 1983?
A) 0.7 knot B) 1.4 knots C) 1.6 knots D) 1.9 knots E)NULL