Vessel Lighting and Shapes Quiz

Where is the masthead light positioned on a vessel?

• Near the stern

• On the port side

• On the centerline above the superstructure

• Below the sidelights

What color is the port sidelight?

• Green

• Yellow

• Red

• White

How many degrees of visibility must a masthead light cover?

• 360°

• 180°

• 112.5°

• 225°

What is the arc of visibility for a sternlight?

• 135°

• 180°

• 225°

• 360°

What color is the towing light?

• Red

• White

• Yellow

• Green

How must the lights for a vessel Not Under Command (NUC) be arranged?

• Red over green

• Green over white

• Red over red

• White over red

What shape does a NUC vessel display during the day?

• Ball-diamond-ball

• Black cylinder

• Two black balls in a vertical line

• Single cone

What lights identify a vessel restricted in ability to maneuver (RAM)?

• White over red

• Red-white-red all-round lights

• Green over red

• Green over white

What is the day shape for a RAM vessel?

• Two balls

• Cone apex down

• Cylinder

• Ball-diamond-ball

What lights identify a trawling vessel at night?

• Red over white

• Green over white

• White over green

• Red-white-red