Are you a TOP GUN in NavRules?You think you're ready for the NavRules test? Take the NavRules Challenge and find out!!
1. INLAND ONLY Yellow lights are NOT used to identify __________.
U.S. submarines vessels pushing ahead law enforcement vessels dredge pipelines on trestles
2. INTERNATIONAL ONLY Which signal is sounded ONLY when vessels are NOT in sight of each other?
A signal of at least five short and rapid blasts Four short blasts on the whistle One prolonged, one short, one prolonged, and one short blast on the whistle, in that order Two short blasts on the whistle
3. BOTH INTERNATIONAL & INLAND A vessel is towing and carrying the required lights on the masthead. What is the visibility arc of these lights?
112.5° 135.0° 225.0° 360.0°
4. INLAND ONLY A vessel displaying a flashing blue light is __________.
transferring dangerous cargo a law enforcement vessel a work boat engaged in a race
5. INLAND ONLY If you were coming up on another power-driven vessel from dead astern and desired to overtake on the other vessel's starboard side, which whistle signal would you sound?
One short blast One prolonged blast Two short blasts Two prolonged blasts
6. INTERNATIONAL ONLY In a narrow channel, a vessel trying to overtake another on the other vessel's port side, would sound a whistle signal of __________.
one short blast two short blasts two prolonged blasts followed by one short blast two prolonged blasts followed by two short blasts
7. INLAND ONLY You are overtaking a power-driven vessel in a narrow channel and wish to leave her on your starboard side. You may __________.
sound one short blast sound four short blasts overtake her without sounding whistle signals attempt to contact her on the radiotelephone to arrange for the passage
8. INLAND ONLY At night, a barge moored in a slip used primarily for mooring purposes shall __________.
not be required to be lighted show a white light at each corner show a red light at the bow and stern show a flashing yellow light at each corner
9. INLAND ONLY A vessel displaying a flashing blue light is __________.
10. INTERNATIONAL ONLY Which dayshape is prescribed for a vessel constrained by her draft?
A black diamond A cylinder A black ball A black cone, apex upward
