1. BOTH INTERNATIONAL & INLAND Which vessel shall NOT impede the passage of a vessel which can safely navigate only within a narrow channel or fairway?

A vessel dredging
A sailing vessel
A vessel servicing an aid to navigation
All of the above

2. BOTH INTERNATIONAL & INLAND A vessel will NOT show sidelights when __________.

underway but not making way
making way, not under command
not under command, not making way
trolling underway

3. BOTH INTERNATIONAL & INLAND You are underway in restricted visibility. You hear the fog signal of another vessel about 22° on your starboard bow. If danger of collision exists you must __________.

reduce your speed to bare steerageway
slow your engines and let the other vessel pass ahead of you
alter the course to starboard to pass around the other vessel's stern
alter course to port to pass the other vessle on its port side

4. INLAND ONLY A power-driven vessel crossing a river on the Great Lakes or Western Rivers, must keep out of the way of a power-driven vessel __________.

descending the river with a tow
ascending the river with a tow
ascending the river without a tow
All of the above

5. INTERNATIONAL ONLY If a vessel displays three all-round red lights in a vertical line at night, during the day she may show __________.

three balls in a vertical line
a cylinder
two diamonds in a vertical line
two cones, apexes together

6. INTERNATIONAL ONLY When vessels are in sight of one another, two short blasts from one of the vessels means __________.

"I am altering my course to starboard"
"I am altering my course to port"
"I intend to change course to starboard"
"I intend to change course to port"

7. BOTH INTERNATIONAL & INLAND For identification purposes at night, U.S. Navy submarines on the surface may display an intermittent flashing light of which color?

Amber (yellow)
White
Blue
Red

8. BOTH INTERNATIONAL & INLAND A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show __________.

three masthead lights in a vertical line instead of either the forward or after masthead light
two masthead lights in a vertical line instead of either the forward or after masthead lights
two towing lights in a vertical line at the stern
a small white light aft of the funnel

9. 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

10. BOTH INTERNATIONAL & INLAND You are the stand-on vessel in a crossing situation. If you think the give-way vessel is NOT taking sufficient action to avoid collision, you should sound __________.

one short blast and maintain course
two short blasts, alter to port, and pass astern
no signal and maneuver at will
the danger signal