GBL NSW Navigation Lights and Signals 2 — Questions and Answers
Question 1: What lights must a sailing vessel display when underway under sail at night?
- Masthead light, sidelights, and stern light — same as a power vessel
- Sidelights and a stern light only, with no masthead light (Correct answer)
- An all-round white light only
- Sidelights only — no stern light is required
Correct answer: Sidelights and a stern light only, with no masthead light
A sailing vessel under sail does not display a masthead light; it shows only sidelights and a stern light, distinguishing it from a power-driven vessel.
Question 2: A power-driven vessel less than 12 metres in length may use which simplified light arrangement?
- An all-round white light and sidelights (Correct answer)
- A single white flashing light only
- Sidelights only with no white light
- Three all-round lights in a vertical line
Correct answer: An all-round white light and sidelights
Small power-driven vessels under 12 metres may display an all-round white light combined with sidelights instead of separate masthead and stern lights.
Question 3: A vessel engaged in fishing (other than trawling) displays which lights at night?
- Two all-round lights, red over white (Correct answer)
- Two all-round lights, green over white
- A flashing yellow light
- Sidelights only
Correct answer: Two all-round lights, red over white
A vessel fishing (other than trawling) displays two all-round lights — red over white — in a vertical line, plus sidelights and stern light if making way.
Question 4: What lights does a vessel aground display at night in addition to its anchor lights?
- Two all-round red lights in a vertical line (Correct answer)
- A flashing red light
- Three all-round red lights in a vertical line
- One all-round red light
Correct answer: Two all-round red lights in a vertical line
A vessel aground shows its anchor light or lights plus two additional all-round red lights in a vertical line to warn approaching vessels of the hazard.
Question 5: When a vessel is towing another vessel, what additional light is displayed above the stern light?
- An all-round white light
- A yellow towing light (Correct answer)
- A red flashing light
- A second green sidelight
Correct answer: A yellow towing light
A towing vessel displays a yellow towing light positioned above and covering the same arc as the stern light to identify it as towing.
Question 6: What shape must a vessel at anchor display during daylight hours?
- A black diamond
- A black ball (Correct answer)
- A black cone, point downward
- Two black balls in a vertical line
Correct answer: A black ball
A vessel at anchor displays a single black ball shape in the forward part of the vessel during daylight hours.
Question 7: A sailing vessel that is also using its engine must display which additional shape during daylight?
- A black ball
- A black diamond
- A cone with the point downward (Correct answer)
- Two black balls in a vertical line
Correct answer: A cone with the point downward
A sailing vessel using its engine (motor-sailing) must display a cone pointing downward to indicate it is being propelled by machinery and is treated as a power vessel.
GBL NSW Navigation Lights and Signals 2
What lights must a sailing vessel display when underway under sail at night?