Master/Chief Mate OSV Practice Test

1. 1. You are docking a ship with a single-screw tug assisting on your starboard bow. How should the tug be tied up if you are anticipating that she will have to hold...
2. 2. You are docking an oceangoing single-screw vessel under normal circumstances with a single tug. Which is the usual function of the tug?
3. 3. According to the U.S. regulations, what must be agreed upon by the person-in-charge of transfer operations, both ashore and on the vessel?
4. 4. You are on a vessel that carries liquefied gasses in bulk. The person on watch is required to have what information about the cargo easily accessible?
5. 5. Which statement about a tunnel bow thruster is TRUE?

Showing the first 5 of 70. Start at question 1 and use Next to work through the module →

1. 1. What power source actuates a solenoid valve?
2. 2. A vessel is "listed" when it is __________.
3. 3. In the illustration, what is the plating indicated by the letter "N" known as?
4. 4. Which signaling devices are required on inflatable liferafts?
5. 5. What does subtracting GM from KM yield?

Showing the first 5 of 70. Start at question 1 and use Next to work through the module →

1. 1. Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 22.4 feet,...
2. 2. You have 400 tons of below deck tonnage and 100 tons of above deck cargo on board. You must load 160 tons of liquid mud below deck. How much more deck cargo can...
3. 3. Your drafts are: FWD 24'-09", AFT 27'-02". Use the blue pages of the Stability Data Reference Book to determine the vessels displacement if you are in salt wate...
4. 4. Your drafts are: FWD 6'-01", AFT 6'-05". From past experience, you know that the vessel will increase her draft 1 inch for every 5 tons loaded. There is rig wat...
5. 5. The liquid mud tanks on your vessel measure 20'L by 18'B by 7'D. The vessel's displacement is 866 T and the specific gravity of the mud is 1.8. What is the redu...

Showing the first 5 of 10. Start at question 1 and use Next to work through the module →

1. 1. Which of the following compensates for errors introduced when a vessel heels over?
2. 2. Which defines the term charted depth?
3. 3. The true course between two points is 057°. Your gyrocompass has an error of 3° east and you make an allowance of 1° leeway for a north-northwest wind. Which gy...
4. 4. You are outbound in a channel marked by a range astern. The range line is 309°T. You are steering 127°T and have the range in sight as shown in illustration D04...
5. 5. The hurricane season in the North Atlantic Ocean reaches its peak during the month of __________.

Showing the first 5 of 70. Start at question 1 and use Next to work through the module →

1. 1. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?
2. 2. Which term is given to that half of the hurricane to the right-hand side of its track (as you face the same direction that the storm is moving) in the Northern...
3. 3. When using the ARPA in heavy rain, which action should you take?
4. 4. Which correction(s) must be applied to an aneroid barometer?
5. 5. A ship is on course 195° at a speed of 15 knots. The apparent wind is from 40° on the port bow, speed 30 knots. The direction and speed of the true wind are ___...

Showing the first 5 of 70. Start at question 1 and use Next to work through the module →

1. 1. The Light List indicates that a light has a nominal range of 10 miles and is 11 feet high. If the visibility is 5 miles and your height of eye is 20 feet, at wh...
2. 2. At 0930 you obtain a position from the following information: Race Rock Light bears 110°T at a range of 1.4 miles, and Goshen Point bears 330°T at a range of 3....
3. 3. At 1000 buoy "PI" is abeam to starboard a distance of 0.5 mile. From this position, with a set of 295° and a drift of 1.6 knots, what course must you steer to a...
4. 4. At 1130, Horton Point Light bears 172°T at a range of 3.45nm. The fathometer reads 81 ft. Which of the following describes your position?
5. 5. At 1155 your vessel's position is LAT 41°09.0'N, LONG 72°34.4'W. If you make good a course of 282°T and a speed of 10.0 knots, when will you arrive at New Haven...

Showing the first 5 of 10. Start at question 1 and use Next to work through the module →

1. 1. You desire to make good a true course of 157°. The variation is 15°E, magnetic compass deviation is 9°W, and gyrocompass error is 3°E. A southwesterly wind prod...
2. 2. On 14 January your 0746 zone time DR position is LAT 26°37.0'N, LONG 153°19.0'W. At that time, you observe the Sun bearing 123°psc. The chronometer reads 05h 49...
3. 3. On 15 July in DR position LAT 22°19.0'N, LONG 154°37.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 298°psc. The...
4. 4. If the speed necessary for reaching port at a designated time is 23.7 knots and the pitch of the propeller is 20.8 feet, how many revolutions per minute will th...
5. 5. At 1845 zone time on 24 October, you depart Bimini Island, LAT 25°50.0'N, LONG 77°00.0'W (ZD +5). You are bound for Bishop Rock, LAT 49°40.0'N, LONG 6°34.0'W, a...

Showing the first 5 of 10. Start at question 1 and use Next to work through the module →

1. 1. On 16 September your 0600 ZT fix gives you a position of LAT 29°47.2'N, LONG 65°28.4'W. Your vessel is on course 242°T and your speed is 13.5 knots. Local appar...
2. 2. For navigational purposes, each great circle on the Earth has a length of __________.
3. 3. On 12 June your 1845 DR position is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 174.0°T...
4. 4. On 16 February your 1845 ZT DR position is LAT 25°50.5' N, LONG 46°24.0' W. At that time you observe Polaris with a sextant altitude (hs) of 26°25.5'. The chron...
5. 5. On 20 November your 1030 ZT DR position is LAT 27°16.0'N, LONG 157°18.6'E. You are on course 060°T at a speed of 20 knots. You observed 3 celestial bodies. Dete...

Showing the first 5 of 15. Start at question 1 and use Next to work through the module →