Navigation Flashcards
How many feet are in a fathom?
6ft = 1 fathom
2yds = 1 fathom
What channel can you activate the fog horn?
83A
Harbor, Coast, General, Sailing Charts?
Harbor- larger than 1:50,000
Coast- 1:50,000 to 1:150,000
General- 1:150,000 to 1:600,000
Sailing- 1:600,000 or smaller
What is the maximum distance at which a light can be seen in clear weather?
Nominal Range
What is the maximum distance at which a light can be seen under existing visibility conditions?
Luminous Range
What is the maximum distance at which the curvature of the earth permits a light to be seen?
Geographic Range
What is the greatest distance at which a black object of suitable dimensions can be seen and recognized by day against the horizon sky?
Meteorological Visibility
What ratio is used for speed and distance on a Maneuvering Board?
5:1 speed
1:1 distance
Ownships vector when using a Maneuvering Board?
ER
Ownship symbol on a Maneuvering Board?
E
What is true concerning the Direction and Navigation Assistance Policy?
Courses to steer shall never be given by the watch stander because of the unique aspects of deviation, wind, and current
What type of verification is required when ATON is damaged by a recreational boater?
Visual check of the aid by any available USCG asset
Which of the following is an objective to the Aids to Navigation System?
Warn the mariner of dangers and obstructions
LGB is the Light List abbreviation for _____.
Lighted Gong Buoy
LWB is the Light List abbreviation for ______.
Lighted Whistle Buoy
The marking of wrecks sunken in the navigable water of the U.S. falls under the responsibility of the _____.
Vessel owner
According to the USCG Light List Navigational Aid reference, “LT” is the abbreviation for ______.
Light
Upon notification of a wreck or obstruction, the District Commander shall be notified via a/an _____.
Hazard to Navigation Message
What is the primary means for disseminating safety information concerning aids and hazards to navigation, and other items of interest to mariners navigating the waters of the United States, its territories, and possessions?
Local Notice to Mariners
What describes bother Federal and private aids to marine navigation maintained by or under the authority of the United States Government?
Light List
Unless exempted, wreck markings established and maintained by the U.S. Coast Guard shall have at least _____ lighted aid(s) in all cases.
One
What does the abbreviation “LLNR” stands for?
Light List Number
The Coast Guard has the authority to do all the following for Aids to Navigation, EXCEPT ______.
Establish, operate and maintain private aids to navigation
A Broadcast Notice to Mariners (BNM) is defined as ______.
The method by which important navigation safety information is disseminated in the most expedient manner
According to the USCG Light List Navigational Aid reference, “TRUB” is the abbreviation for _____.
Temporarily Replaced by Unlighted Buoy
What is the maximum time an ATON unit has to respond to a routine ATON discrepancy?
72 hours
DBN is the Light List abbreviation for ______.
Day Beacon
Each of the following are part of a Light List aids to navigation entry EXCEPT _____.
Color, Watch Circle Radius, Last Service Date
In which mission area is the use of N-VMS not permitted?
ATON
