Towing Vessels – Western Rivers Practice Test

1. 1. In accordance with U.S. regulations which of the following is the proper label name for a class 4.1 substance?
2. 2. Fire protection regulations for towing vessels require any fuel line to have which item?
3. 3. A loaded hopper barge carrying independent tanks has placards with alternating red and white quadrants on each side and at both ends. Which statement concerning...
4. 4. A nylon line is rated at 12,000 lbs. breaking strain. Using a safety factor of 5, what is the safe working load (SWL)?
5. 5. A 98 GT towing vessel with a 1500 B.H.P. engine capability would be required to carry how many hand portable fire extinguishers on board (including machinery sp...

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1. 1. A fuel line breaks, sprays fuel on the hot exhaust manifold and catches fire. What should be your FIRST action?
2. 2. Who is responsible for ensuring that all of the crew members receive instruction on reporting inoperative alarm systems and fire-detection systems?
3. 3. Four-cycle diesel engines obtain combustion air through turbo chargers, blowers, or which other means?
4. 4. You are picking up an unconscious person that has fallen overboard. For safety reasons how should the towboat's yawl approach the person?
5. 5. What is the function of wearing rings found on some centrifugal pumps?

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1. 1. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.
2. 2. What does the "head of a bend" in a waterway refer to?
3. 3. What does a Doppler log in the bottom return mode indicate?
4. 4. Fog generally clears when the __________.
5. 5. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?

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1. 1. On 3 January you get underway from Cambalick Dock, Morganza, LA, (mile 278.3 AHP) enroute to the Valvoline Pier RDB, (mile 176.3UMR). What is the length of the...
2. 2. What are the dimensions of the Old River Lock on the Lower Old River (304 AHP)?
3. 3. At 2126, you pass Morganza Bend Light (mile 278.4 AHP). At 0122, 4 January, you pass Red River Landing Gage (302.4 AHP). You have been turning for 7.5 mph. What...
4. 4. The Gage at Red River Landing reads 22.2 feet. The low water reference plane for Red River is 10.6 feet. How many feet is this above the low water reference pla...
5. 5. The river will be temporarily closed to navigation at mile 531.3 AHP due to repairs to the bridge. This will occur at 1300, 5 January, and last for six hours. W...

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