Coastal Navigation Practice Exam

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• Mean High Water (MHW) is used to relate tides to chart depths and for harbor approaches. Which statement best describes MHW?
• What does track over the ground represent?
• If a chart uses MLLW as the vertical datum for depths, what does this indicate about the measurement?
• Which statement about identifying a lighthouse at night using light characteristics is correct?
• Which statement correctly defines the three north references used in coastal navigation: true north, magnetic north, and compass north?
• Is a running fix less reliable than a standard fix?
• Which sequence best describes planning a harbor approach using dead reckoning and tide data?
• What does chart datum represent in navigation?
• How does compass error affect heading interpretation?
• What is the standard sign convention for variation when converting magnetic course to true course?
• Small circle is defined as which of the following?
• Why is logging chart corrections important?
• Which term describes the effect of a vessel's own magnetic interference on the compass?
• What is the difference between an estimated position (EP) and a fix?
• In plotting a fix, if two lines of position do not intersect exactly due to data errors, what is the recommended method?
• What is a tidal datum and why is it important for navigation?
• What is the consequence of not accounting for current when plotting a course over ground?
• The term for the direction from one terrestrial object to another is which?
• What is the difference between chart datum and tidal datum?
• What does a cardinal mark indicate for safe passage?
• NLT stands for
• If magnetic variation cannot be verified, what should you avoid relying on for navigation?
• What happens when you bring two like poles together?
• A danger range can be labeled as NMT or NLT.
• Prime meridian is defined as which of the following?
• Where do you find latitude on a chart or map?
• How do you measure distance on a chart and convert it to nautical miles?
• The 45-degree-north line of latitude is:
• What is the significance of chart scale in distance measurement?
• What is the primary reason for using both nautical charts and digital charts in coastal navigation?
• Which type of magnetism describes magnetism that persists without an external magnetic field?
• How would you use a chart to determine the safe direction around a hazard marked by a cardinal buoy?
• What is a running fix?
• Which statement about using three lines of position (LOPs) is false?
• According to the laws of magnetism, which statement is correct?
• How is the minimum safe depth determined during a coastal maneuver using chart data?
• Which term is defined as the direction in which the vessel is pointed?
• Which statement correctly describes the equator?
• The great circle concept is most closely tied to:
• When a water current and vessel motion are combined to determine track, what method is used?
• The symbol used to represent a FIX on a chart is which shape?
• When two lines of position nearly intersect due to data imperfections, which method should you use to determine the best estimate?
• How do you convert a magnetic bearing to a true bearing using a known variation?
• What defines a great circle on the Earth's surface?
• How would you verify your position near a coastal landmark at night?
• What is the difference between a large-scale chart and a small-scale chart?
• Which statement about parallels of latitude is true?
• What is the purpose of an estimated position (EP)?
• How would you determine your true course when navigating with a magnetic course and known variation?
• When you detect drift during a coastal transit, which action is least appropriate?
• The lubbers line serves what purpose on a compass?
• What is a sounding, and how is it used in coastal navigation?
• By convention, the North Pole on a magnet is painted which color?
• Mean Lower Low Water (MLLW) is defined as the average of the lower low tides; depths on most coastal charts are referenced to this datum. What does MLLW represent?
• A FIX is represented on a chart by which symbol?
• What is Dead Reckoning (DR), and what data are required to compute it?
• What is the purpose of Notices to Mariners (NTM)?
• What is piloting in coastal navigation?
• If you cannot identify two landmarks for a fix, what is a valid alternative method?
• What is the recommended method to measure distance between two plotted points on a chart?
• What is the impact of current direction on your track when given a heading?
• Equator is defined as which of the following?
• The equator is:
• What color are port-hand lateral marks when approaching from sea?
• The heading of a vessel is indicated by the?
• Depth readings on a nautical chart are referenced to which datum?
• Which is the magnetic course when True course is 350°, Variation 5° West, Deviation 2° East?
• An electronic fix is depicted as which shape?
• How does a running fix differ from a stationary fix?
• In visual 3 bearing, which order is used?
• What marks a danger bearing when charted?
• What is a line-of-position fix using two landmarks?
• On a Mercator chart, what happens to chart accuracy as you approach the poles?
• How do you correct your plot for instrument error when fixing your position?
• To convert a true bearing to a magnetic bearing when the variation is East, you should.
• Which statement correctly defines magnetic variation?
• Which statement about buoy color and shape is correct when planning a safe passage through a channel?
• In the IALA buoyage system, what does the rule "Red right returning" mean when approaching a harbor?
• Which property distinguishes great circles from other circles on Earth?
• If you take a single line of position (LOP), what can you determine?
• Which statement about chart datum is correct?
• How does a tidal current affect your track?
• Two differences between a chart and map (chart)
• Which statement best contrasts a topmark and a lateral mark?
• What is the purpose of a compass rose on a chart?
• What is 'time to high water' used for in voyage planning?
• Which statement about Lines of Position (LOP) is true?
• Two LOPs are not as good as three LOPs.
• A Range is a straight LOP, while a visual bearing is a curved LOP. This statement is
• A navigator has a true course of 045° and the chart shows 5° East variation. What is the magnetic course?
• What is the primary purpose of an IALA buoyage system?
• Which day shape indicates a Not Under Command vessel?
• Parallels are:
• Why is the distinction between true bearing and magnetic bearing important?
• What is a Line of Position (LOP) and how is it formed on a chart?
• To obtain the actual course over ground from a given heading, which factor must you consider?
• The set of circles on the Earth's surface that are parallel to the equator is called:
• Which data are required to plot a DR position?
• What is the proper method to record and interpret a Not Under Command scenario?
• Parallels of latitude are best described as:
• Compass error is the combination of what?
• What is a Special Mark and how is it identified?
• How can depth contours be used in hazard avoidance?
• What is the maximum duration allowed for a running fix in practice?
• Given a true course of 120°, variation 6° East, and deviation 2° West, what is the magnetic course?
• Dead Reckoning relies on which data to estimate position?
• How is a chart correction applied after receiving it via a Notice to Mariners?
• What is set and drift and how do you apply it to a dead reckoning calculation when near the coast?
• Lines Of Position, or LOPs, can be which shapes?
• How do you use a tide table to estimate high-water times for a harbor approach?
• Which statement best differentiates dead reckoning from piloting?
• What is the purpose of a Notice to Mariners?
• What is a Line of Position (LOP)?
• Which combination of techniques provides a reliable position when GPS is unreliable?
• Compute the magnetic course given true 80°, variation 9° West, deviation 3° East.
• Which statement about Dead Reckoning (DR) is true?
• Current predictions are monitored to help anticipate what during a coastal transit?
• Which statement is NOT typically included in a coastal navigation log?
• In harbor planning, why is Mean High Water (MHW) important?
• What is the difference between variation and declination in navigation terms?
• Which of the following is true about the relationship between true north and magnetic north in navigation terminology?
• Deviation is caused by?
• Heading versus track difference is primarily caused by?
• Mean Sea Level (MSL) is the zero-level datum used for depth readings. Which statement best describes MSL?
• Which chart type combination is commonly used for near-shore depths and hazards?
• How can you use a lighthouse’s listed light characteristics to identify it at night?
• Which statement best contrasts great circles with parallels?
• Which methods form a position when celestial methods are unavailable?
• Which types of charts are commonly used in coastal navigation?
• What does taking bearings from multiple landmarks allow navigators to determine?
• Which statement accurately describes a 60-degree line of latitude?
• Which statement best describes graphing a bearing line from a known landmark in an intercept calculation?
• A fix is a position established at a specific time to a high degree of accuracy. Which pair completes this definition?
• On a chart, distance is measured in nautical miles; each nautical mile equals how many feet?
• Which statement describes a map as opposed to a chart?
• Which term describes the direction of one object to another?
• Which statement about Lines Of Position is true?
• Which formula expresses the relationship between True, Magnetic, and Deviation given Variation?
• What term represents the distance between two terrestrial objects?
• What is a common use of dividers on a nautical chart?
• Which term describes the angular difference between true north and magnetic north?
• Which term is used to describe the angular difference between True North and Magnetic North?
• Two differences between a chart and map (map)
• How is a position fix obtained by the intersection method?
• Which statement best defines drift angle?
• In low visibility or fog along the coast, which action is most prudent?
• The equator is:
• During coastal passage planning, which weather information should you monitor to anticipate changes in track, speed, and safety?
• Which statement correctly describes the Prime Meridian?
• In piloting, what other methods are commonly used alongside visual landmarks?
• A vessel sails 6 knots on a course of 045°. A current of 2 knots is flowing at 090°. What is the resulting track and speed?
• Which statement about poles is true?
• Which term describes the horizontal direction a vessel is intended to be steered?
• A true course of 060° with 6° West variation. What is the magnetic course?
• Mean Low Water (MLW) is defined as which of the following?
• In the intercept plotting method, what does the intercept represent?
• What is the reciprocal direction of 270 degrees?
• Meridian is defined as which of the following?
• If the deviation gets greater than how many degrees should you hire a magnetic compass adjuster?
• Which statement about set and drift in currents is most accurate?
• Mean High Water (MHW) is defined as which of the following?
• If wind and sea state increase unexpectedly, what should you do to maintain safety and progress?
• What is the most important item that determines how we measure deviation?
• Which statement best explains the difference between speed through water and speed over ground?
• Which statement describes a chart as opposed to a map?
• What day shapes indicate Not Under Command?
• The term for circles on the Earth's surface that are parallel to the equator is:
• What is a tidal current?
• Given a magnetic bearing of 120°, a deviation of 2° and a variation of 4° East, what is the true bearing?
• When converting between True and Magnetic bearings and you have no verified variation, what should you do?
• Which factor is not typically part of weather data used for coastal navigation planning?
• What is a cardinal mark and what does its position indicate to the navigator?
• What is LAT and why is it used as chart datum?
• If you observe a single landmark and measure its bearing, what does that determine?
• What are the three types of magnetism?
• What practice best helps ensure you are using current navigational information on charts?
• Which data is most relevant for planning harbor entry in tidal waters?
• What is the effect of a deviation table on plotting?
• How would you plot an intercept between your LOP and a known landmark bearing?
• What is an example of a DR distance calculation?
• In COLREGS terms, what best describes the risk of collision and the stand-on/give-way approach?
• Which statement about set and drift on navigation is most accurate?
• With a single LOP, which statement is correct?
• What is ETA and how do you calculate it?
• Which statement about Lines of Position is true?
• What best describes a rhumb line on a Mercator chart?
• What information does a safe water mark provide to a mariner?
• What is the primary purpose of plotting Lines of Position on a chart?
• Which acronym expansion matches NLT?
• Good piloting includes what?
• Which statement about how a navigator uses a Line of Position (LOP) to determine a fix?
• Why is it important to correct for tidal current when estimating ETA?
• Regarding three LOPs, which statement is false?
• What is the purpose of plotting tools like the parallel ruler and dividers?
• Small circle is defined as which of the following?
• Which statement best describes how depth readings on nautical charts relate to tide?
• What is a Mercator chart and why is it preferred for coastal navigation?
• When taking three visual bearings, what order is correct?
• If a current has a set of 090° at 2 knots while you steer 000° at 6 knots, what is your approximate track over ground?
• Which statement best describes the purpose of adjusting heading based on drift angle?
• How long will it take to get there?
• Where on the Earth's surface would a magnetic compass experience the strongest directional force from the Earth's magnetic field?
• A Chart scale of 1:80,000 means one inch on the chart is equal to how much on the earths surface?
• Where am I going?
• Which statement correctly describes converting a magnetic bearing to a true bearing?
• Estimated position on a chart is depicted by which shape?
• What is radar plotting and how does it help in coastal navigation?
• What instrument is primarily used to measure bearings to objects at sea?
• NMT stands for
• How do two Lines of Position from two separate landmarks yield a fix?
• What does the acronym LOP stand for in coastal navigation?
• Which datum is typically used as the depth reference on navigational charts?
• What method yields a position fix when you have two known landmarks and measured bearings to them?
• Where on a nautical chart is magnetic variation shown, and how is it used to convert true bearings to magnetic bearings?
• A position plotted from a range and bearing to a light is known as what?
• Which statement about great circles is true?
• What is a range on a chart, and how can it be used for navigation?
• How do you identify a navigational aid on a chart using its symbol and color?
• Which attributes does the IALA buoyage system use to indicate safe channels and hazards?
• If you are 20 nautical miles from a waypoint and your speed over ground is 10 knots, what is the estimated time to reach the waypoint?
• Which statement correctly differentiates course from heading in navigation?
• What is the primary aim of navigation as described in the material?
• The definition of a fix includes that it is established at a specific time and to a high degree of accuracy. Which pair completes this statement?
• How would you determine coastline position by dead reckoning when close to land?
• Which term describes the direction directly in line, opposite to your current heading (for example, 270-090)?
• Which best describes the difference between sounding and depth on a chart?
• Which chart scale is most appropriate for detailed harbor entrance navigation?
• Variation is the difference between which two north references?
• Which statement best differentiates a bearing from a course?
• Navigation is the process of directing the movement of a vessel from one point to another, we need to do this___
• Which option best answers the question ‘Where am I?’ in navigation?
• What is the difference between 'bearing to' an aid and 'bearing from' an aid for navigation?
• What is dead reckoning?
• In running navigation practice, the maximum duration of a running fix should not exceed how many minutes?
• Which statement about reciprocal direction is correct?
• On a chart scaled 1:80,000, how many centimeters on the chart correspond to 1 nautical mile in water?
• What is the function of fog signals and how are they represented on charts?
• Explain the intercept method for plotting a position with two lines of position.
• Which weather data best informs you about sea state and current influence?
• The dead reckoning position is described in relation to which geometric term?
• What is the purpose of a Safe Water Mark and how is it marked aesthetically?
• If you observe two fixed landmarks and measure bearings to them, how do you compute your position?
• How do you compute a compass correction (deviation) for a vessel?
• Where am I?
• Which weather factor is essential to monitor to anticipate changes in speed during a coastal passage?
• What is the first step when navigating around a hazard marked by a cardinal buoy?
• Which option best answers the question ‘Where am I going?’ in navigation?
• A line of latitude that is not the equator is:
• Variation in a magnetic compass is determined by what?
• Where do you find longitude?
• Which duration is a commonly accepted maximum for a running fix?
• When updating dead reckoning near the coast, should you incorporate the current set and drift into your calculations?
• What is the purpose of a navigation log, and what essential entries should it contain during a coastal passage?
• Which statement correctly describes a meridian?