Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
bearing |
The numerical value of the direction to an object (between 0 and 360). It can be specified as the relative to true north, magnetic north, or the bow of the boat. |
|
|
Close-Inshore |
Close to beach, in and out of rocks and surf and pocket bays. In oceanography, called the littoral zone. |
|
|
Current |
Horizontal flow of the surface water, can be driven by the tides or other sources |
|
|
Dead reckoning |
Estimating your position based on distance (log) and direction (compass) run from your last known position, corrected for current, leeway, and helm bias as needed. |
|
|
gyro |
Electronic device used on larger vessels to determine accurate vessel heading. It is based on gyroscopic principles and does not depend on the earth's magnetic field. |
|
|
inshore |
In sight of land in clear weather, usually in 100 fathoms of water or less, but away from the hazards of the close-inshore region |
|
|
knotmeter |
A boat's speedometer, measures speed in knots, usually by means of a spinning propeller below the hull |
|
|
Offshore |
Ocean or coastal location, out of sight of lang, usually without surroundings |
|
|
position fix |
a known position of the vessel on the chart at a particular time determined by some form of piloting or by electronic navigation using GPS or radar |
|
|
Shoaling |
Means shallow water; also called shoals or shoal water |
|
|
waypoints |
specific checkpoints (Lat and Lon) on a chart that are chosen to mark progress points or turning points along an intended route. |
|
|
The art of dead reckoning navigation lies in A. Determining a best estimate for your position based on logbook records or course, distance, and time B. Determining your exact position based on course, distance, and time C. estimating your position based on bearings to at least two known landmarks D. Estimating your position based on identifying a buoy that you have just passed |
A. Determining a best guess for your position based on continuing measurement of course, distance, and time
|
|
|
Piloting is the art of navigating a vessel... A. by reference to GPS courses and fixes B. By reference to nearby buoys and landmarks C. In heavy waves when the vessel may become airborne D. By following other vessels of similar size and draft |
B. By reference to nearby landmarks and buoys
|
|
|
Which is incorrect about Navigation Rules: A. Rules apply to stand-up-paddle boards B. The rules do not apply to kayaks, rowboats, or jet skis C. The rules apply to submarines D. The rules apply to seaplanes when landing on the water or taking off from the water |
B. The rules do not apply to kayaks, rowboats, or jetskis
|
|
|
Arguable the most important book in navigation is... A Bowditch's New Practical American Navigator B. The Navigation Rules C. Chapman Piloting and Seamanship D. Latest editions of the Tide and Tables and Tidal current Tables |
B. The Navigation Rules
|
|
|
When your vessel's accurate position at a particular time has been determined by some form of piloting or by electronic navigation using GPS or radar, and noted on a navigation chart, it is said to be... A. An estimated position (EP) B. An updated DR C. A fix D. A position forecast |
C. A fix
|
|
|
What is the approximate length of a nautical mile in feet that is very valuable for every navigator to know? |
6,000 (6072) ft [exact is 1,852 m
|
|
|
Translate this into landsman speech: "We logged 20 miles according to the log, which I logged into the log." |
We traveled 20 miles according to the vessel's odometer, which I wrote into the book we use for keeping records of our voyage |
|
|
What is at least one reason why the main challenge of modern navigation training is learning route planning and not position finding? |
You can buy an instrument to tell you where you are, but not one that tells you the safest, fastest and most efficient way to go
|
|
|
What is the color of (A) even numbered buoys? (B) Odd ones? |
A. Red (B) Green |
