三副航海英语补充题目

10.2 地文航海

[2701]Leeway is the ______.

A. difference between the true course and the compass course

B. momentum of a vessel after her engines have been stopped

C. lateral movement of a vessel downwind of her intended course

D. displacement of a vessel multiplied by her speed

KEY: C

[2702]______ is the process by which the position of the vessel at any moment is found by applying the last well-determined position to the run that has been made since，using for this purpose the ship's course and the distance being those indicated by log．

A. dead reckoning

B. dead weight

C. dead slow ahead

D. dead slow astern

KEY: A

[2703]______ means the curve on the earth's surface which cuts all the meridians at the same angle．

A. Great Circle

B. Position Line

C. Rhumb line

D. True Bearing

KEY: C

[2704]A bold reef is a reef ______.

A. with part of it extending above the water

B. that can be detected by water turbulence

C. that drops off sharply

D. perpendicular to the current

KEY: B

[2705]A buoy having red and green horizontal bands would have a light characteristic of ______.

A. interrupted quick flashing

B. composite group flashing

C. Morse (A)

D. quick flashing

KEY: B

[2706]A buoy marking a wreck will show a(n) ______.

A. white light FL (2) and a topmark of 2 black spheres

B. occulting green light and may be lettered

C. yellow light and will be numbered

D. continuous quick white light and may be numbered

KEY: A

[2707]A buoy with a composite group-flashing light indicates a(n) ______.

A. anchorage area

B. fish net area

C. bifurcation

D. dredging area

KEY: C

[2708]A buoy，being a shape of cylinder and with red group flashing，shows that it is ______.

A. left-side buoy

B. right-side buoy

C. a buoy of safety

D. a buoy of danger

KEY: A

[2709]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

KEY: A

[2710]A dead reckoning (DR) plot ______.

A. ignores the effect of surface currents

B. is most useful when in sight of land

C. must be plotted using magnetic courses

D. may be started at an assumed position

KEY: A

[2711]A dead reckoning (DR) plot ______.

A. must utilize magnetic courses

B. must take set and drift into account

C. should be replotted hourly

D. should be started each time the vessel's position is fixed

KEY: D

[2712]A fairly accurate estimation of a ship's position can be calculated by a technique known as ______.

A. dead reckoning

B. Pilotage

C. great circle sailing

D. geographic navigation

KEY: A

[2713]A large navigational buoy (LNB) is painted ______.

A. red

B. yellow

C. with red and white vertical stripes

D. with a distinct color and pattern unique to each buoy

KEY: A

[2714]A line connecting all possible positions of your vessel at any given time is a ______.

A. longitude line

B. latitude line

C. line of position