Are you a TOP GUN in NavRules?You think you're ready for the NavRules test? Take the NavRules Challenge and find out!!
1. BOTH INTERNATIONAL & INLAND You are in charge of a 120-meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the fog signal of a vessel underway off your port bow. You may sound __________.
at least five short and rapid blasts two short blasts one short, one prolonged, and one short blast three short blasts
2. INTERNATIONAL ONLY A whistle signal of one prolonged, one short, one prolonged and one short blast, is sounded by a vessel __________.
at anchor towing a submerged object being overtaken in a narrow channel in distress
3. INLAND ONLY Your vessel is proceeding down a channel, and can safely navigate only within the channel. Another vessel is crossing your bow from port to starboard, and you are in doubt as to her intentions. Which statement is TRUE?
The sounding of the danger signal is optional. The sounding of the danger signal is mandatory. You should sound two short blasts. You should sound one prolonged and two short blasts.
4. BOTH INTERNATIONAL & INLAND The minimum length of a power-driven vessel that must show forward and after masthead lights is __________.
30 meters 50 meters 75 meters 100 meters
5. BOTH INTERNATIONAL & INLAND While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. This is the fog signal for a vessel __________.
towing being towed (manned) under sail at anchor
6. INLAND ONLY While underway in a harbor you hear a vessel sound a prolonged blast. This signal indicates that this vessel __________.
desires to overtake your vessel is at anchor is backing her engines is moving from a dock
7. INLAND ONLY Your vessel is meeting another vessel head-on. To comply with the steering and sailing rules, you should __________.
sound the danger signal sound one prolonged and two short blasts exchange two short blasts exchange one short blast
8. INLAND ONLY Which is CORRECT regarding a "special flashing light"?
It must be yellow in color. It must be placed as far forward as possible. It must not show through an arc of more than 225°. All of the above
9. BOTH INTERNATIONAL & INLAND While underway at night you are coming up on a vessel from astern. What lights would you expect to see?
Red and green sidelights Two white lights One white light and red and green sidelights One white light
10. BOTH INTERNATIONAL & INLAND A 20-meter sailing vessel underway must exhibit a __________.
sternlight combined lantern red light over a green light at the masthead All of the above