A.Set and drift of the current
B.Relative track information
C.Predicted time of CPA
D.Initial range of acquisition
您可能感興趣的試卷
你可能感興趣的試題
A.enhance weak target echoes and brighten them on the PPI
B.reduce clutter over the entire PPI by shortening the echoes
C.only suppress weak targets to a limited distance from the ship (sea clutter)
D.reduce the beam width to provide a map-like presentation for navigation
A.Immediately after floating free
B.After about one hour when the salt water activates the battery
C.Only when keyed by the radar of another vessel
D.Only when daylight activates the photovoltaic cell
A.the best fix is obtained by using a tangent bearing and a range
B.and using two radar ranges for a fix,the objects of the ranges should be close to reciprocal bearings
C.and using ranges,the most rapidly changing range should be measured last
D.and crossing a radar range of one object with the visual bearing of a second object,the two objects should be 80°to 110°apart
A.Increase the radar gain to pick up weak echoes through the rain
B.Increase the STC setting to reduce close-in spurious signals
C.Navigate as though the effective range of the radar has been reduced
D.Increase the range of the inner and outer guard rings
A.The target vessel's generated course and speed are based solely on radar inputs
B.Navigational constraints may require a target vessel to change course
C.The trial maneuver feature will automatically determine a course that will clear all targets
D.You cannot determine if a small target has been lost due to sea return
最新試題
When using the ARPA in heavy rain,which action should you take? ()
Which statement concerning the operation of radar in fog is TRUE?()
Your radar is set on a true motion display.Which of the following will NOT appear to move across the PPI scope().
When you turn on the fast time constant (differentiator) control of a radar it will().
The()has a built-in world map; most areas are displayed on a scale of 4000 nm from the top to the bottom of the screen,and can be zoomed in to 150 nm.
When using an ARPA,what should you consider in order to evaluate the information displayed?()
You are underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later,the contact is 8 miles directly astern of you. What is the estimated speed of the contact? ()
()typically extends from close as 0.1 nautical miles out to 32 NM.
Which statement about an estimated position is TRUE?()
When using a radar in a unstabilized mode,fixes are determined most easily from().