🔍 Key Concepts

• Navigation Rules Part C – Lights and Shapes • Compare basic power-driven vessel underway lights (Rule 23) with towing/pushing lights (Rule 24) and dredging lights (Rule 27) • Notice whether the colored lights are side lights or all-round lights and how they are arranged

💭 Think About

• Ask yourself: Does this picture look like the normal ahead view of a vessel’s sidelights and a masthead light, or does it show a special vertical or horizontal pattern used for towing or dredging? • Which of the answer choices would normally require additional special lights (extra whites, yellows, or vertical red/green combinations) beyond the basic running lights? • From this angle, are you seeing the ship’s port and starboard sides at the same time, or are you looking more or less right at the bow?

✅ Before You Answer

• Identify if the white light is a masthead light (forward, higher) or an all‑round special light used for a restricted‑in‑ability vessel or dredge • Check whether there are any yellow lights present – these are important for towing or pushing ahead under Rule 24 • For dredging (Rule 27), verify if you see the required red–white–red or red–red / green–green all‑round light combinations that mark the obstructed and clear sides