National Maritime Center

Transcription

1 National Maritime Center Providing Credentials to Mariners (Sample Examination) Page 1 of 6

2 Choose the best answer to the following Multiple Choice Questions. 1. The following questions are based on Chart 12221TR, Chesapeake Bay Entrance, and the supporting publications. Your height of eye is 25 feet (7.6 meters) Gyro error is 3 E Variation is 10 W "Per standard magnetic compass" is abbreviated "psc" Per gyrocompass is abbreviated pgc DEVIATION TABLE Magnetic Heading Deviation W W W W W E E E E E E On which frequency does the National Weather Service provides 24 hour weather broadcasts to vessels transiting the Chesapeake Bay Bridge Tunnel area? (A) MHz o (B) MHz o (C) MHz o (D) MHz If choice A is selected set score to At 1752, your position is LAT 'N, LONG 'W. On a flood current you should expect to be set to which direction? o (A) south southwest (B) north northwest o (C) east southeast o (D) east Page 2 of 6

3 3. Where does your 1752 position place you? o (A) less than 0.5 mile eastward of York Spit Channel o (B) greater than 0.5 mile eastward of York Spit Channel (C) less than 0.5 mile westward of York Spit Channel o (D) greater than 0.5 mile westward of York Spit Channel 4. What is the average velocity of the maximum flood current at the Tail of the Horseshoe? o (A) 0.6 knot (B) 0.9 knot o (C) 1.3 knots o (D) 1.6 knots 5. From your 1752 position, you steer 307 pgc at 9 knots. At 1805, you obtain the following visual bearings: Old Pt. Comfort Light 232 pgc. Chesapeake Bay Tunnel North Light 130 pgc. What are the latitude and longitude of you 1805 position? o (A) LAT 'N, LONG 'W (B) LAT 'N, LONG 'W o (C) LAT 'N, LONG 'W o (D) LAT 'N, LONG 'W 6. At 1810, you sight a buoy on your starboard side labeled "19". What does this buoy mark? o (A) a submerged obstruction in York Spit Channel o (B) the visibility limit of the red sector of Cape Henry Light (C) the side of York Spit Channel o (D) the junction of the York Spit and York River Entrance Channels Page 3 of 6

4 7. Based on a DR, at approximately 1817 you would expect to do which of the following? o (A) enter a traffic separation zone o (B) depart a restricted area o (C) cross a submerged pipeline (D) depart a regulated area If choice D is selected set score to At 1845, you obtain the following bearings: Old Plantation Flats Light 071 T New Point Comfort Spit Light "2" 334 T What is your latitude? o (A) 'N o (B) 'N o (C) 'N (D) 'N If choice D is selected set score to Your 1900 position is LAT 'N, LONG 'W. You change course to 317 pgc and slow to 8.0 knots. What is the course per standard magnetic compass? o (A) 311 psc (B) 329 psc o (C) 309 psc o (D) 331 psc 10. If the visibility is 11 miles, what is the luminous range of New Point Comfort Spit Light "4"? (A) 5.0 miles o (B) 3.8 miles o (C) 4.3 miles o (D) 0.5 mile If choice A is selected set score to 1. Page 4 of 6

5 11. According to your track line, how far off New Point Comfort Spit Light "4" will you be when abeam of this light? o (A) 1.5 miles o (B) 1.2 miles (C) 0.9 mile o (D) 1.8 miles 12. At 1930, you take a fix using the following radar ranges: York Spit Light miles New Point Comfort Spit Light "2" miles York Spit Swash Channel Light "3" miles What is your longitude? o (A) 'W o (B) 'W o (C) 'W (D) 'W If choice D is selected set score to What was the speed made good from 1845 to 1930? (A) 8.3 knots o (B) 7.5 knots o (C) 9.4 knots o (D) 6.2 knots If choice A is selected set score to What is the height above water of Davis Creek Channel Light "1"? o (A) 6 feet (1.8 meters) o (B) 17 feet (5.2 meters) (C) 15 feet (4.6 meters) o (D) 24 feet (7.3 meters) Page 5 of 6

6 15. If you have 17.3 miles to reach your destination from your 2000 position and want to be there at 2230, what speed should you make good? o (A) 6.1 knots o (B) 6.5 knots (C) 6.9 knots o (D) 5.7 knots Page 6 of 6