默认题库 - 海图及海图作业

单选题

A revised print of a chart is made （）.

A. after every major hydrographic survey of the area covered by the chart
B. when there are numerous corrections to be made or the corrections are extensive
C. when a low-stock situation occurs and minor corrections are made
D. every two years to update the magnetic variation informatio

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单选题

Chart correction information is NOT disseminated through the （）.

A. Summary of Corrections
B. Local Notice to Mariners
C. Daily Memorandum
D. Chart Correction Card

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单选题

How is the annual rate of change for magnetic variation shown on a pilot chart?（）

A. Gray lines on the uppermost inset chart
B. Red lines on the main body of the chart
C. In parenthesis on the lines of equal magnetic variation
D. Annual rate of change is not show

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单选题

Attention is （）the advice on the use of charts in The Mariner’s Handbook Chapter 3，Section 1.

A. fixed to
B. needed for
C. pushed to
D. drawn to

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单选题

（）is not a position-fixing system.

A. Hifix
B. Hyperfix
C. Trisponder
D. WGS84

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单选题

The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.

Amphibious training areas
B. Grounds for dredge spoil
C. Fish trap areas
D. Gunnery exercise area

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单选题

The short-long dashed magenta line around Gardiners Island marks（）.

A regulated anchorage
B. Fish trap areas
C. An area closed to the public
D. Underwater cable

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单选题

The soundings on the imperial chart are measured in（）.

A. Feet
B. Yards
C. Fathoms
D. Meter

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单选题

On the south and the east coasts of Block Island are circles with a dot in the center and labeled CUP. This is a （）.

A. conspicuous object
B. steep depression in the surrounding hills that resembles a cup
C. domed structure useful for navigation
D. calling-up-point used for traffic control

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单选题

Navigational charts are （） frequent changes，the important one of which are promulgated by Admiralty Notices to Mariners．

A. published with
B. combined with
C. in connection with
D. subject to

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