Rule of the Road and Buoyage. Test 15

Which of the following is a vessel 'not under command'?

A vessel engaged in underwater operations.
A tug engaged in a towing operation.
A sailing vessel becalmed.
A power driven vessel with main engine failure.

You observe this vessel on a steady bearing, range 3 miles. What action would you take?

Sound five short and rapid blasts and stand on with caution.
Sound two short blasts and alter course to port.
Sound one short blast and alter course to starboard.
Make a substantial reduction of speed.

At night you notice, in addition to other lights, two yellow lights in a vertical line which flash alternately every second. What does this indicate?

A fishing vessel hampered by her purse seine gear _____
A dredger showing the side on which a vessel can pass.
A towing vessel's light seen from abaft the beam.
An air cushion vehicle operating in the non-displacement mode.

What signal shall a vessel sound when nearing a bend or an area of narrow channels or fairway where other vessels may be obscured by an intervening obstruction?

One prolonged blast.
Two prolonged blasts followed by two short blasts.
At least five short and rapid blasts.
Two short blasts.

You have another vessel on your port bow in clear visibility, but with a moderate sea and swell. Which of the following would normally give greatest accuracy in determining if risk of collision exists?

Observation of the compass bearing over a period of time
Observation of the radar bearing
Observation of the radar bearing and range
Observation of the radar range

Vessels as far as possible should avoid anchoring _____

in a traffic separation scheme or in areas near it's terminations.
in a traffic separation scheme.
near the terminations of a traffic separation scheme.
in a traffic separation zone.

At night, in addition to her sidelights, what else must a sailing vessel show?

A white light in the direction of an approaching vessel.
A white light.
A stern light.
Red over green masthead lights.

What is a power-driven vessel?

Any vessel propelled by an internal combustion engine.
Any vessel which is self-propelled.
Any vessel other than a vessel propelled by sails.
Any vessel propelled by machinery.

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