A.crossB.approachC.proceed nearD.run intoSometimes a tr……

单项选择题Some of these shoals have been disproved and are not charted. Nevertheless mariners should （）with particular caution in this area.

A.go
B.proceed
C.move
D.remove

单项选择题Safe speed is defined as that speed where（）.

A.you can stop within your visibility range
B.the vessel is not subject to vibrations
C.you are traveling slower than surrounding vessels
D.you can take proper and effective action to avoid collision

单项选择题RYC8 TKS PLSPROCEED PEAKIS MEET PLT SHIFT W ANCH FOR QTINE THEN TO E ANCH FOR SUPPLY. This telex indicates that（）.

A.the vessel will anchor at eastern anchorage and take supply at the western anchorage
B.the vessel will anchor at western anchorage and take supply at the eastern anchorage
C.the vessel will anchor at eastern anchorage and take supply there
D.the vessel will anchor at western anchorage and take supply there

单项选择题Risk of collision exists when an approaching vessel has a(n)（）.

A.generally steady bearing and decreasing range
B.generally steady range and increasing bearing
C.increasing range and bearing
D.decreasing bearing only

单项选择题On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.

A.loxodromic curve
B.curved line concave to the equator
C.straight line
D.spiral approaching the poles as a limit