單項(xiàng)選擇題Where would you obtain data on currents for areas of the world not covered by the National Ocean Service().

A.In the Coast Pilot
B.In the Nautical Almanac
C.In the List of Lights
D.In the Sailing Directions


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1.單項(xiàng)選擇題The soundings on the imperial chart are measured in().

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

2.單項(xiàng)選擇題The short-long dashed,magenta lines parallel to York River Entrance Channel mark().

A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines

3.單項(xiàng)選擇題The short-long dashed magenta line around Gardiners Island marks().

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

4.單項(xiàng)選擇題The shoreline on charts generally represents the mean().

A.High water line
B.Low water line
C.Low water spring line
D.Tide level

5.單項(xiàng)選擇題The broken magenta lines(long and short dashes)in and around Mobjack Bay indicate().

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