Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope.?
A) Own ship’s marker B) Echo from a ship at anchor C) Echoes from land masses D) All of the above E)NULL
Soru Kategorisi Güverte
At what angle to the isobars do surface winds blow over the open sea?
A) About 90° B) About 50° C) About 25° D) About 15° E)NULL
Given are the courses and speeds of 4 vessels. The navigator of which vessel would be required to know the actual time of meridian transit in order to take an accurate observation at LAN?
A) C 166°T, Sp 24 knots B) C 013°T, Sp 7 knots C) C 291°T, Sp 25 knots D) C 112°T, Sp 4 knots E)NULL
The approximate distance to a storm center can be determined by noting the hourly rate of fall of the barometer. If the rate of fall is 0.08 – 0.12 inches, what is the approximate distance to the storm center?
A) 50 to 80 miles B) 80 to 100 miles C) 100 to 150 miles D) 150 to 250 miles E)NULL
A NAVAREA warning carries the following number; 1986/87 (11). Which statement is TRUE?
A) The warning was issued in 1986, the 87th sequentially numbered warning and broadcast 11 times. B) This is warning number 1986 issued in 1987, and it affects sub-region 11. C) This warning is valid in 1986 and 1987 and…
The major problem with Moon sights is the __________.?
A) rapid changes in GHA and declination introduce errors into the calculations B) lack of a well defined limb during certain phases and positions in the sky C) approximations used in the solution caused by the variable horizontal parallax D)…
Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from __________.?
A) low steel on the Huey P. Long Bridge B) mean sea level C) the local water table D) the minimum dam control level E)NULL
The shoreline on charts generally represents the mean __________.?
A) high water line B) low water line C) low water spring line D) tide level E)NULL
A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water in the area is on the __________.?
A) north side of the mark B) west side of the mark C) east side of the mark D) south side of the mark E)NULL
Geographic range is the maximum distance at which a light may be seen under __________.?
A) existing visibility conditions, limited only by the curvature of the Earth B) perfect visibility conditions, limited only by the curvature of the Earth C) existing visibility conditions, limited only by the intensity of the light D) perfect visibility conditions,…