Name: Class: Answer Key Date: Page 1 of 7 Navigation & Orienteering: Pre- Test There are three sections: Multiple Choice, True/False, and Short Answer. For the multiple choice, please select the BEST answer from the options provided. If you have any questions, please raise your hand and I will do my best to clarify. 1. Define Orienteering and explain how it relates to Nautical Navigation: Orienteering is the sport of navigation. It is a mix of cross country running and map work. It requires an individual to read a map a compass and to be able to find their way through a course. 1. What are the Three Norths? a. True North, Map North, Magnetic North b. True North, Grid North, Magnetic North c. Northeast, Northwest, North d. Magnetic North, Polar North, Arctic North 2. What is the difference between a chart and a map? a. A chart shows the different elevations whereas a map doesn't b. A chart is based on the water and a map is based on land c. They are essentially the same thing d. A map contains more detail than a chart 3. A compass points to which north? a. True North b. Grid North c. Magnetic North d. Seismic North 4. How many satellites does a GPS need to use in order to determine an exact location? a. 1 b. 2 c. 3 d. 4 5. A GPS orients to which north (unless programmed otherwise)? a. True North b. Grid North c. Magnetic North d. Seismic North
Answer Key Page 2 of 7 6. Where can you find True north on a compass rose? a. The inner compass rose b. The outer compass rose c. The compass rose located furthest north on the chart d. The compass rose located furthest south on the chart 7. All of these are parts of a compass EXCEPT. a. The needle b. The doghouse c. The bezel d. The trough 8. These lines on a map or chart run North to South a. Latitude b. Longitude c. Poles d. Parallels 9. These lines on a map or chart run East to West a. Latitude b. Longitude c. Poles d. Parallels 10. How many visual points on a map or chart can you use to get an accurate location of where you are? a. 1 b. 2 c. 3 d. 4 11. A parallel ruler is used for what function? a. Measuring Distance b. Measuring Angles c. Measuring Bearings d. Determining Speed 12. How can you tell if your boat is on a collision course? a. It will have generally steady bearing with decreasing range b. It will have generally changing bearing with a decreasing range c. It will have generally steady bearing with an increasing range d. It will have generally changing bearing with a steady range
Answer Key Page 3 of 7 13. Which device will NOT provide navigation information? a. VHF b. RADAR c. GPS d. SONAR 14. A sextant is used for taking bearings on what type of features a. Land Marks b. Day Marks c. Navigational Range marks d. Celestial Bodies 15. The correct definition of a bearing is: a. The compass number on a scale of 0-359 degrees b. The direction from an object toward the observer c. The direction toward an object from the observer d. A line along which the observer is located 16. G 1 Fl G 4s on a buoy means: a. Green number 1 buoy with 4 flickering lights b. Grass on the bottom of a buoy all 4 seasons c. Green number 1 buoy flashing a green light every 4 seconds d. Green number one buoy with a green flag and a bell every 4 seconds 17. What can you use to measure distance on a map or chart? a. Latitude b. Longitude c. Borders d. Compass Rose 18. A chart/map title is found on what part of the chart/map? a. Top b. Bottom c. Left d. Right 19. Shallow water is generally marked with what type of shading on a chart? a. White b. Light Blue c. Dark Blue d. Green
Answer Key Page 4 of 7 20. What is a fix? a. An accurately determined located position b. A line along which the observer is located c. The line on a compass that points north d. The line on a compass that determines where you are 21. How many feet are in a yard? a. 1 b. 2 c. 3 d. 4 22. How many feet are in a fathom? a. 2 b. 4 c. 6 d. 8 23. What type of signal does GPS use to communicate with a GPS receiver? a. Digital b. Radio c. Morse Code d. Infrared 24. Who control s the GPS s accuracy? a. NASA b. Department of Defense c. US Air Force d. Joint Chiefs of Staff 25. What is the best description of Dead Reckoning? a. An exact line which has been plotted on a chart based off a ship s speed b. A shipwreck caused by poor navigation c. An exact location of a ship s position based on multiple bearings d. An approximate location of a ship s position based on it s last known position and a series of vectors determined by the speed and bearing of the ship
Answer Key Page 5 of 7 26. What is the difference between Magnetic and True meridians? a. Compass Change b. Deviation c. Variation d. Variable Change 27. The device that can be walked across a chart or map to determine distances is a: a. Parallel Ruler b. Compass Divider c. Nautical Slide Ruler d. Scientific Calculator True/False 28. T = S/D T 29. A contour line measures a set interval of distance in elevation or depth. T 30. Contour lines can cross each other. F 31. Contour lines will be close together to show a steel hill. T 32. Most rivers East of the continental divide flow from West to East. T 33. GPS satellites are a primary form of navigation. F 34. A chart and a map are relatively the same thing. F 35. You should never rely on a single aid to navigation to determine your position. T
Answer Key Page 6 of 7 36. The magnetic north pole is reliable because it is stationary. F 37. A compass divider is used to measure BOTH angles as well as distance. F Short Answer 38. Bull set sail heading north at 6 knots. After 1 hour she turns east and sails at 8 knots for 1 more hour. (1) How many total miles has Bull sailed in 2 hours? 6 mi/hr * 1 hr + 8 mi/hr * 1 hr = 14 miles (2) How far is Bull from her original location? 6^2 + 8^2 = 10^2 39. A ship is heading 125 degrees per standard compass. For this heading the deviation is 10 degrees E and the variation is 5 degrees W in the area. Using this information, find: (1) The magnetic heading Magnetic bearing = Compass bearing + deviation = 125 10 = 115 (2) The true heading True bearing = Magnetic bearing + variation = 115 + 5 = 120 40. The good ship Bull sets sail from Annapolis bound for Westport, 24 miles away. She sails the most direct route and makes 7 knots over the ground. The equally good ship Bear sets sail from Westport bound for Annapolis (24 miles away). She too sails the most direct route and makes 5 knots over the ground. (1) How long will it take Bull to reach Westport? 24 miles / 7 kts = 3. 4 hours
Answer Key Page 7 of 7 (2) How long will it take Bear to reach Annapolis? 24 miles / 5 kts = 4.8 hours (3) How long before Bear and Bull meet in the middle of their voyage? 24 miles / (7 +5) = 2 hours