When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.

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• The Consol navigation system，used in Russian and Northern European waters，can be used（）.

  A . for precise navigation in coastal waters B . by measuring the phase difference of the dots and dashes C . as an aid to ocean navigation D . if the vessel is fitted with a special Consol receiver

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• For the deepest water when rounding a bend in a river，you should navigate your vessel（）.

  A . toward the inside of the bend B . toward the outside of the bend C . toward the center of the river just before the bend，then change course for the river's center after the bend D . in the river's center

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• Right ascension is primarily used by the navigator for（）.

  A . calculating amplitudes B . calculating great circle sailings by the Agiton method C . entering the Air Navigation Tables (Selected Stars) Pub 249 D . plotting on star finder

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• Vessels should maintain a sharp lookout，especially during December through March，when navigating the right whale’s only known calving grounds which lie off the coasts of（）.

  A . Nova Scotia B . Maine and Massachusetts C . Georgia and NE Florida D . California and Mexico

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• When navigating in thick fog with the radar on，you should（）.

  A . station the look-out in the wheelhouse to keep a continuous watch on the radar B . secure the sounding of fog signals until a vessel closes within five miles C . station a look-out as low down and far forward as possible D . keep the radar on the shortest available range for early detection of approaching vessel

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• You want to use WLST to view metrics for a running domain. Which command should you issue to navigate through the Mbean hierarchy containing the metrics?（）

  A . runtime ()   B . runtimeMbeanServer () C . connectRuntime () D . beginRuntime () E . serverRuntime ()

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• By the sole fact of using the Canal Waters，Masters and Owners of vessels（）themselves to accept all the conditions of the present Rules of Navigation.

  A . lash B . fasten C . bind D . tie

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• When using the radar for navigating（）.

  A . the best fix is obtained by using a tangent bearing and a range B . and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings C . and using ranges，the most rapidly changing range should be measured last D . and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart

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• When ship navigating in rough sea, the correct operation is （）

  A . navigating with a low diesel engine speed B . navigating with a stable diesel engine speed C . increasing the efficiency of propeller D . increasing fuel injectio

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• If at any time the officer in charge of the navigational watch is to be relieved when a manoeuvre or other action to avoid any hazard is taking place,（）.

  A、the relief of that officer shall be made prior to such action has been completed B、the relief of that officer shall never be made C、the relief of that officer shall be deferred until such action has been completed D、the relief of that officer shall be made by the captain

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• You are about to cross a narrow channel when you see an approaching vessel that can only be navigated safely within the channel.You should（）.

  A、cross the channel as you are the stand-on vessel B、cross only if the vessel in the channel is approaching on your port side C、not cross the channel if you might impede the other vessel D、sound the danger signal

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• When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.

  A、a straight line drawn on the chart approximates a great circle B、the chart should not be used outside of the standard parallels C、the course angle is measured at the mid-longitude of the track line D、Distance cannot be measured directly from the chart

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• When ship navigating in rough sea, the first measure taken by the chief engineer to prevent the overload should be（）

  A . cleaning fuel oil, lubricating oil and seawater filter B . reducing fuel feeding of the main engine appropriately or reducing the pitch angle of propeller C . using low sea chest D . closing the skylight and the ventilation opening, which doesn’t affect the normal work of equipment

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• When navigating a vessel，you（）.

  A . Can always rely on a buoy to be on station B . Can always rely on a buoy to show proper light characteristics C . Should assume a wreck buoy is directly over the wreck D . Should never rely on a floating aid to maintain its exact positio

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• The load limitation of governor should be reduced when ship navigating at sea, the main reason is to（）

  A . prevent the diesel engine surging B . prevent governor from being damaged because of swing C . reduce the probability of the crank shaft being torsional vibrated and resonated D . prevent the main engine being overload or overspeed

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• Coast Pilots and navigational charts are kept corrected and up-to-date by using the（）.

  A . pilot charts B . Notices to Mariners C . Tide Tables D . Current Table

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• Which three built-ins can you use to navigate between forms invoked with the OPEN_FORM built-in? （）

  A . CLOSE_FORM  B . NEXT_FORM  C . GO_FORM  D . PREVIOUS_FORM

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• When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she（）.

  A . should not be regarded as a vessel constrained by her draught B . should be regarded as a vessel constrained by her draught C . shall be regarded as a vessel restricted in her ability to maneuver D . should be regarded as a non-displacement vessel

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• Why use glass when you can use plastic?

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• 144. The only cylinder chart projection widely used for navigation is the ____

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• 83. The only cylindrical chart projection widely used for navigation is the _____.

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• 152. When navigating in high latitudes and using a chart based on a Lambert conformal projection , ______

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• 35. When you navigate pipelines, which of the following garbage is always prohibited to be disposed into the sea

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