Term
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Definition
| The process of directing the movements of a vessel from one place to another safely and efficiently. |
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Term
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Definition
| Parallels of Latitude except Equator |
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Term
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Definition
| All Longitiude Lines and the Equator |
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Term
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Definition
Red Lights used in Dangerous Sectors. White Light in Safe Area
sector limits are expressed in degrees true as observed from a vessel, not from the lights |
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Term
| What color are port buoys and how are they numbered? |
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Definition
| green, and they're odd numbered. |
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Term
| What color are starboard buoys and how are they numbered? |
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Definition
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Term
| Who are the members of the plotting team? |
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Definition
| Navigator, plotter, bearing taker, bearing recorder and in CIC - the piloting officer, radar operator, and plotter. |
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Term
| Define degrees of Longitude. |
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Definition
| 180 degrees west to 180 degrees east, and always use 3 digits |
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Term
| Define degrees of latitude. |
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Definition
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Term
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Definition
| Intersects different lines of longitude at equal angles. |
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Term
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Definition
| Intersects different lines of longitude at equal angles. |
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Term
| When is a Rhumb line straight? |
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Definition
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Term
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Definition
| Seperated by political boundaries. |
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Term
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Definition
| It is primarily concerned with depicting navigable water areas. |
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Term
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Definition
| It contains information on naval bases in the US and in foreign counties. |
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Term
| What is the publication that is a narrative of navigation and related information for foreign waters that cannot be shown on a chart? |
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Definition
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Term
| What is the List of Lights? |
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Definition
| Describes aids to navigation found in foreign waters and selected U.S. coastal regions |
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Term
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Definition
| Lists aids to navigation in U.S. waters |
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Term
| What is the Coastal Pilot? |
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Definition
| Provide supplemental information about navigation in U.S. coastal waters |
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Term
| How do you know when charts have been updated? |
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Definition
| By messages in the Notice to Mariners. |
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Term
| What is a large scale chart? |
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Definition
| Show small areas; are more magnified. |
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Term
| What is a small scale chart? |
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Definition
| Show large areas; are less magnified. |
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Term
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Definition
| It tells you the preferred side of the channel to transit in. Red on top and green on bottom means stay to the port side of the channel. Green on top, red on bottom means stay on starboard side. |
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Term
| What is a safe-water buoy? |
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Definition
| It has red and white vertical stripes and tells you where safe water is. |
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Term
| What is the difference between a gyro compass and a magnetic compass? |
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Definition
| A gyro compass seeks true north, while a magnetic compass seeks magnetic north. |
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Term
| What are the advantages of a magnetic compass? |
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Definition
| Does not need power, requires little to no maintenance, and durable |
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Term
| What are the disadvantages of the magnetic compass? |
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Definition
| Can not be used near the poles, does not seek true north, it is affected by the surrounding materials |
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Term
| What are the advantages of the gyro compass? |
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Definition
| Can be used near the earth’s magnetic poles, where magnetic compass is useless, Unaffected by surrounding material,Signal can be fed to other systems (INS, fire control, automatic steering) |
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Term
| What are the disadvantages of the gyro compass? |
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Definition
| intricate electronic instrument, requires constant electrical power, sensitive to power fluctuations, requires periodic maintenance |
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Term
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Definition
| International Association of Lighthouses for foreign sea's buoy patterns, red on port, green on starboard(opposite of IALA B) |
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Term
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Definition
| International Association of Lighthouses for US sea buoy patterns, red right return, green port (opposite of IALA A) |
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Term
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Definition
| The maximum distance at which a light may be seen under the current meteorological conditions. |
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Term
| What is the nominal range of a light? |
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Definition
| The distance a light can be seen in “clear” weather. Also called the CHARTED RANGE because you find this number on the chart! |
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Term
| What is the geographic range of a light? |
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Definition
| The distance at which a light can be seen in perfect visibility (taking into account elevation, observer’s height of eye, and the curvature of the earth). |
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Term
| How do you convert feet to nautical miles? |
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Definition
| 1.169 times the sq. root of the height |
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Term
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Definition
| Computed range is taking the lesser of the nominal or the geographic range. |
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Term
| When is the nominal range equal to the luminous range? |
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Definition
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Term
| What does "True Virgins Make Dull companions At Weddings!" mean? |
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Definition
| Way to calculate compass calculations. |
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Term
| If gyro heading is best(greater than true heading) then direction of error is _____. |
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Definition
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Term
| If gyro heading is least(less than true heading) then gyro error is ____. |
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Definition
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