U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage ... · Q310 Nav General-Great Lakes and...

National Maritime Center Serving Our Nation’s Mariners

U.S.C.G. Merchant Marine Exam

Mate of Unlimited Tonnage

Q310 Nav General – Great Lakes and Inland

(Sample Examination)

of 16 Q310 Nav General – Great Lakes and Inland

9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0

Choose the best answer to the following Multiple Choice questions.

1. At 0000 you fix your position and change course to 270°T. At 0030 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?

o (A) The set is 270°, drift 0.5 knot. o (B) The set is 090°, drift 0.5 knot. o (C) The set is 270°, drift 1.0 knot. • (D) The set is 090°, drift 1.0 knot.

If choice D is selected set score to 1.

2. The charted depth alongside the south face of Mystic Pier, Charlestown, MA, is 35 feet. Your maximum draft is 38 feet. You wish to have 2 feet under the bottom, on a rising tide, when you go alongside to discharge a heavy lift. What is the earliest time after 0900 EST (ZD +5), on 2 February 1983, that you can dock?

o (A) 1020 o (B) 1050 o (C) 1127 • (D) 1137


3. Which meteorological feature controls the climate of the Gulf and the Gulf Coast area during late spring and summer?

o (A) Tropical cyclones o (B) The horse latitudes • (C) The Bermuda High o (D) The doldrums

If choice C is selected set score to 1.

4. Which is a feature of a special daymark?

o (A) A red-and-white octagon • (B) A yellow diamond o (C) A green square o (D) A daymark with a yellow stripe on it

If choice B is selected set score to 1.


9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 5. What information is found in the chart title?

o (A) Date of the first edition • (B) Information on the sounding datum o (C) Information on which IALA buoyage system applies o (D) Date of the edition and, if applicable, the revision


6. Your ship is entering port from sea, and you sight a pair of range lights. When in line, they bear 315° per standard magnetic compass. The chart shows that the range bearing is 312°T, and that variation is 6°W. What is the deviation of your compass at the time of the sighting?

• (A) 3°E o (B) 3°W o (C) 9°E o (D) 9°W

If choice A is selected set score to 1.

7. "Proceeding from seaward" for the purpose of the direction of buoying offshore, lateral system buoys would be proceeding __________.

o (A) easterly on the Gulf Coast o (B) northerly on the Atlantic Coast • (C) northerly on the Pacific Coast o (D) None of the above


8. At the magnetic equator there is no induced magnetism in the vertical soft iron because __________.

o (A) the lines of force cross the equator on a 0°-180° alignment o (B) the intercardinal headings have less than 1° error • (C) there is no vertical component of the Earth's magnetic field o (D) the quadrantal error is 0°


9. What will be the velocity of the tidal current southwest of Hunts Point, NY, at 0932 EST (ZD +5) on 16 March 1983?

o (A) 0.9 knot • (B) 1.5 knots o (C) 1.8 knots o (D) 2.3 knots



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 10. Which publication would describe the explosive anchorages in the ports on the east coast of the

United States?

o (A) Notice to Mariners o (B) Sailing Directions • (C) Coast Pilot o (D) Pilot Rules for Inland Waters


11. Which statement is TRUE concerning equatorial tides?

o (A) They occur when the Sun is at minimum declination north or south. • (B) The difference in height between consecutive high or low tides is at a minimum. o (C) They occur when the Moon is at maximum declination north or south. o (D) They are used as the basis for the vulgar establishment of the port.


12. You are bound for Baltimore via Cape Henry on a 15 knot ship. If the flood at Chesapeake Bay entrance begins at 1800 EST (ZD +5), at what time would you depart from the Chesapeake Bay entrance to have the most favorable current?

o (A) 1700 hours o (B) 1800 hours o (C) 1900 hours • (D) 2030 hours


13. Your vessel is on a course of 207°T at 13 knots. At 0539 a light bears 180.5°T, and at 0620 the light bears 162°T. At what time and at what distance off will your vessel be when abeam of the light?

o (A) 0641, 6.5 miles • (B) 0701, 8.9 miles o (C) 0633, 5.9 miles o (D) 0653, 7.6 miles



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 14. On a weather map, what does a large letter "H" indicate?

o (A) Horse latitudes, with rough seas and strong winds o (B) A heavy squall line is immanent near the "H" o (C) A high pressure area with warm, moist air, and inclement weather • (D) A high pressure area with cool, dry air, and fair weather


15. Which term describes the atmosphere in the vicinity of a high pressure area?

o (A) Cold front • (B) Anticyclone o (C) Occluded front o (D) Cyclone


16. A chart with a scale of 1:80,000 would fall into which category?

o (A) Harbor charts • (B) Coastal charts o (C) Sailing charts o (D) General charts


17. You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?

• (A) 070°T o (B) 060°T o (C) 090°T o (D) 080°T


18. The southeast trade winds actually blow in which direction?

• (A) Northwest o (B) South o (C) East o (D) Southeast



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 19. How do preferred channel buoys indicate the preferred channel to transit?

o (A) The buoy's light rhythms o (B) Odd or even numbers • (C) The color of their top band o (D) The location of the buoy in the channel junction


20. As a cold front passes how do the pressure and the winds change?

o (A) Pressure drops and winds become variable o (B) Pressure drops and winds become gusty o (C) Pressure rises and winds become variable • (D) Pressure rises and winds become gusty


21. Under the U.S. Aids to Navigation System used on the Western Rivers, which is TRUE of the aids to navigation lights on the right descending bank?

o (A) They can only be white lights o (B) They are white or red lights o (C) They can only be green lights • (D) They are white or green lights


22. Spring tides are a semimonthly event. Which of the following choices defines the sequence of events for Spring tides to occur?

o (A) Only at the start of spring, when the Sun is nearly over the equator o (B) Only when the Sun and Moon are on the same side of the Earth and nearly in line • (C) When the Sun, Moon, and Earth are nearly in line, in any order o (D) When the Sun and Moon are at approximately 90o to each other as seen from the Earth


23. You are approaching a vertical lift bridge. How do you know when the span is fully open?

o (A) A red light starts to flash at about 60 times a minute o (B) Three white lights in a vertical line are lit • (C) A range of two green lights under the lift span are lit o (D) A yellow light is illuminated on the bridge pier



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 24. If the current and wind are in the same direction, what does the sea surface represent concern the

true wind speed?

o (A) It appears at the correct speed • (B) It appears less than actually exists o (C) It appears higher than actually exists o (D) The appearance of the sea surface does not change


25. You are underway in a vessel with a draft of 7.0 feet (2.1 meters). The charted depth for your position is 9 fathoms. You compute the height of tide to be +3.0 feet (0.9 meters). You determine the depth of the water beneath your keel to be __________.

• (A) 50 feet (15.3 meters) o (B) 32 feet (9.8 meters) o (C) 41 feet (12.6 meters) o (D) 64 feet (19.6 meters)


26. You are approaching Chatham Strait from the south in foggy weather. You have Coronation Island and Hazy Islands on the radar. Suddenly the radar malfunctions. You then resort to using whistle echoes to determine your distance off Coronation Island. Your stopwatch reads 16.3 seconds for the echo to be heard. How far are you off Coronation Island?

o (A) 1.0 mile • (B) 1.5 miles o (C) 2.0 miles o (D) 2.5 miles


27. If a sound signal is emitted from the oscillator of a fathometer, and two seconds elapse before the returning signal is picked up, what depth of water is indicated?

o (A) 1248 fathoms • (B) 824 fathoms o (C) 1648 fathoms o (D) 1048 fathoms



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 28. When do the prevailing westerlies of the Southern Hemisphere blow 17-27 knots?

• (A) All year long o (B) During spring only o (C) During the winter only o (D) During the summer months only


29. When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. Which term is given to this process?

• (A) Bobbing a light o (B) Raising a light o (C) Obscuring a light o (D) Checking a light


30. When a magnetic compass is not in use for a prolonged period of time it which action should be taken?

o (A) Have any air bubbles replaced with nitrogen o (B) Be locked into a constant heading o (C) Have the compensating magnets removed • (D) Be shielded from direct sunlight


31. Which Naval Control of Shipping publication should be aboard your vessel?

o (A) ATP-1, Volume II "Allied Tactical Signals" o (B) PUB 102, "International Code of Signals" o (C) NWP-14, "Amphibious Operations" • (D) ATP-2, Volume II "Allied Control of Shipping Manual - Guide to Masters"


32. You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate?

o (A) The buoy is a special mark o (B) The buoy is off station • (C) You are in the vicinity of the ICW o (D) The buoy designates a sharp turn in the channel



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 33. You have been observing your radar screen and notice that a contact on the screen has remained in

the same position, relative to you, for several minutes. Your vessel is making 10 knots through the water. Which statement is TRUE?

o (A) The contact is on a reciprocal course at the same speed as your vessel. o (B) The radar is showing false echoes and is probably defective. o (C) The contact is dead in the water. • (D) The contact is on the same course and speed as your vessel.


34. Where can information about the currents for the Pacific Coast of the U. S. be obtained?

o (A) Nautical Almanac o (B) Tide Tables • (C) Tidal Current Tables o (D) Ocean Current Tables


35. What does a white buoy with an open-faced orange diamond on it indicate?

o (A) The buoy is a mooring buoy o (B) Vessels are excluded from the area o (C) Operating restrictions are in effect • (D) Danger


36. the U.S. Aids to Navigation System on the Western Rivers, a preferred channel buoy to be left to port while proceeding downstream will __________.

o (A) have the upper band red o (B) show a red light if lighted o (C) have a characteristic of composite group flashing if lighted • (D) All of the above


37. Which radar control shortens all echoes on the display and reduces clutter caused by rain or snow?

o (A) The brilliance control • (B) The fast time constant (differentiator) o (C) The receiver gain control o (D) The sensitivity time control (sea clutter control)



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 38. What is the light phase characteristic of a lighted isolated-danger mark?

o (A) Interrupted quick flashing o (B) Long flashing o (C) Very quick flashing • (D) Group flashing


39. The direction in which a vessel should be steered between two points is the __________.

o (A) bearing o (B) heading • (C) course o (D) course over the ground


40. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?

o (A) Light List • (B) Coast Pilot o (C) Sailing Directions o (D) Pilot Chart


41. Which navigational mark may only be lettered?

o (A) An unlighted, green, can buoy • (B) A spherical buoy o (C) A red buoy o (D) A port side day-shape


42. You take bearings of 313°T and 076°T on two objects. Which bearing of a third object will give the best fix?

o (A) 048°T o (B) 101°T o (C) 142°T • (D) 187°T



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 43. Buoys which only mark the left or right side of the channel will never exhibit a light with which

characteristic?

• (A) Composite group flashing o (B) Flashing o (C) Equal interval (isophase) o (D) Quick flashing


44. Determine the time after 0300 CST (ZD +6) when the velocity of the tidal current will be 0.5 knot on 16 April 1983, at Port Arthur Canal Entrance, TX.

o (A) 0436 • (B) 0507 o (C) 0538 o (D) 0554


45. Which term is used to express the maximum distance at which a light may be seen under existing visibility conditions?

o (A) Geographic range o (B) Nominal range o (C) Charted range • (D) Luminous range


46. You wish to make good a course of 258°T, allowing 4° leeway for northerly winds. The variation is 21°W. What should you steer per standard magnetic compass to make good 258°T? DEVIATION TABLE Magnetic Heading Deviation 285° 5°E 270° 3°E 255° 1°E 240° 1°W

o (A) 242°psc o (B) 271°psc • (C) 278°psc o (D) 288°psc



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 47. Which of the following describes gyrocompass repeaters which reproduce the indications of the

master gyrocompass?

o (A) They are hand operated o (B) They are accurate only if the vessel is underway • (C) They are accurate electronic servomechanisms o (D) They are accurate only in the Polar regions


48. Where can information for updating paper nautical charts primarily be found?

o (A) Sailing Directions • (B) Notice to Mariners o (C) Nautical chart catalogs o (D) Coast Pilots


49. Which is TRUE concerning privately maintained aids to navigation included in the Light List?

o (A) They must be conspicuously marked by a signboard with the words "PRIVATE AID" o (B) Not permitted in or along first-class waterways and may be authorized for second- and third-

class waterways o (C) They are painted white and must use a white light if lighted • (D) They must conform to the standards of the U.S. Aids to Navigation System


50. Which device maintains a continuous graphic record of the heading of the vessel?

o (A) The auto pilot • (B) The course recorder o (C) The fathometer o (D) The AIS system


51. On what does the operation of an aneroid barometer depend?

o (A) Expansion of mercury in a closed tube o (B) Curved tube containing alcohol • (C) Thin, metal, air tight cell o (D) Column of mercury supported by atmospheric pressure



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 52. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to

indicate?

o (A) Preferred channel • (B) Safe water o (C) A special mark not primarily used for navigation o (D) Isolated danger


53. What does a white buoy with an orange cross within a diamond marked on it indicate?

o (A) An anchorage area o (B) Operating restrictions are in effect o (C) Danger • (D) Vessels are excluded from the area


54. A single line of position combined with a dead-reckoning position results in a(n) __________.

o (A) fix o (B) assumed position • (C) estimated position o (D) running fix


55. What is a characteristic of cardinal marks?

• (A) Light rhythms indicating directional orientation o (B) Vertical stripes o (C) Square or triangular topmarks o (D) Number-letter combinations for identification


56. While on a course of 034°pgc, a light bears 8° on the port bow at a distance of 8.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to port?

o (A) 035°pgc o (B) 051°pgc • (C) 043°pgc o (D) 059°pgc



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 57. Which agency maintains federal aids to navigation?

o (A) National Ocean Service o (B) Maritime Administration • (C) Coast Guard o (D) Corps of Engineers


58. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?

• (A) 10 meters o (B) 20 meters o (C) 50 meters o (D) 92 meters


59. A Doppler log in the volume reverberation mode indicates __________.

o (A) the set of the current o (B) the depth of the water • (C) speed through the water o (D) speed being made good


60. The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT _________.

o (A) evaluate the danger of each closing visual or radar contact • (B) reduce speed only where local speed limits are posted o (C) enter all required test and inspection results in the vessel's log or other record carried on

board o (D) adjust speed with due regard for the weather and visibility


61. Yellow lights may appear on which buoys?

o (A) Horizontally-banded buoys • (B) Special purpose buoys o (C) Spherical buoys o (D) Vertically-striped buoys



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 62. Which term describes the daily recurring pattern of pressure changes most noticeable in low

latitudes?

o (A) Daily lapse reading o (B) Synoptic pressure o (C) Pressure tendency • (D) Diurnal variation of pressure


63. Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 352°T, and the variation is 4°W. If the heading of your vessel at the time of the sighting is 359° per standard magnetic compass, what is the correct deviation?

• (A) 3°W o (B) 7°E o (C) 11°E o (D) 11°W


64. On a working copy of a weather map what color is the line that represents a warm front?

o (A) Purple o (B) Alternating red and blue o (C) Blue • (D) Red


65. By what means are indications of the master gyrocompass sent to remote repeaters?

• (A) by transmitter o (B) by azimuth motor o (C) by phantom element o (D) by follow-up system


66. Which information is NOT required to be posted in or near the wheelhouse?

• (A) A diagram of advance and transfer for turns of 30°, 60°, 90° and 120° at full speed with maximum rudder and constant power

o (B) For vessels with a fixed propeller, a table of shaft RPMs for a representative range of speeds o (C) Stopping time and distance from full speed while maintaining course with minimum rudder o (D) Operating instructions for change-over procedures for remote steering gear systems



9/5/2019

Q310 Nav General-Great Lakes and Inland U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage Illustrations: 0 67. On the Mississippi and Ohio Rivers, there is a special type of fog known as steam fog. What

conditions cause this fog?

• (A) Cold air passing over much warmer water o (B) Warm air passing over much colder water o (C) A rapid cooling of the ground on a clear night o (D) Rain coming out of a warm air mass aloft


68. Determine the height of the tide at 2045 EST (ZD +5) at Augusta, ME, on 8 March 1983.

o (A) 1.4 feet (0.5 meter) • (B) 1.9 feet (0.6 meter) o (C) 2.3 feet (0.7 meter) o (D) 2.6 feet (0.8 meter)


69. What is used to help prevent damage to barges, locks, and landings when you are locking or landing a tow?

• (A) Possums (fenders) o (B) Dock cushions o (C) Landing bars o (D) Springers


70. When trying to sight a lighthouse you notice a glare from a town in the background. How does this affect the range at which the light may be sighted?

o (A) Unchanged o (B) Increased if the light is red or green due to contrast with the glare • (C) Considerably reduced and difficult to distinguish o (D) Increased slightly due to extra lighting



9/5/2019

U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage ... · Q310 Nav General-Great Lakes and...

Documents

Transcript of U.S.C.G. Merchant Marine Exam Mate of Unlimited Tonnage ... · Q310 Nav General-Great Lakes and...