BOTH INTERNATIONAL & INLAND When is a...

Question 1 / 2707066636eeb28f7522a1c51bb52

Question 1 of 2707066636eeb28f7522a1c51bb52

BOTH INTERNATIONAL & INLAND When is a power-driven vessel "not under command" at night required to show her sidelights?

Question 1 of 27070

BOTH INTERNATIONAL & INLAND When is a power-driven vessel "not under command" at night required to show her sidelights?

🔍 Key Concepts

• Rule 27 – Vessels Not Under Command in the Navigation Rules • Difference between making way through the water vs. not making way (stopped or adrift) • When sidelights and sternlight are required in addition to special lights

💭 Think About

• First, recall what lights a vessel "not under command" must show at night in all cases, and then think about when the normal running lights (sidelights and sternlight) are added. • Ask yourself: are sidelights meant to indicate direction of motion or just the presence and status of a vessel? How does that affect a vessel that is stopped, anchored, or moored? • Compare the situations: stopped in the water, at anchor, and moored. In which of these is the vessel considered to be underway and making way, and in which is it not underway under the Rules?

✅ Before You Answer

• In Rule 27, verify exactly when a vessel not under command must exhibit sidelights and a sternlight in addition to the two all-round red lights. • Check the definition of “underway” and “making way” in the Rules section of the Navigation Rules; be clear on how this differs from being at anchor or moored to a buoy. • Confirm which of the listed situations (no headway, at anchor, making headway, moored) actually meets the condition that triggers the requirement to show sidelights for a vessel not under command.

Question 1 of 27070

BOTH INTERNATIONAL & INLAND When is a power-driven vessel "not under command" at night required to show her sidelights?

when making no headway

when at anchor

when making headway

when moored to a buoy

Question 1 / 2707066636eeb28f7522a1c51bb52

Question 1 of 2707066636eeb28f7522a1c51bb52

BOTH INTERNATIONAL & INLAND When is a power-driven vessel "not under command" at night required to show her sidelights?

Back

Question 1 of 27070

BOTH INTERNATIONAL & INLAND When is a power-driven vessel "not under command" at night required to show her sidelights?