🔍 Key Concepts

• Rule 30 – Anchored Vessels and Vessels Aground (International & Inland) • Different light requirements for vessels less than 50 meters and 50 meters or more in length • The difference between anchor lights and working/deck lights

💭 Think About

• First decide what Rule 30 requires for a vessel 150 meters in length specifically. Does that length fall into the ‘less than 50 m’ or ‘50 m and above’ category? • Ask yourself: for a large vessel at anchor, are one or two all-round white lights required, and where are they placed? • Think about whether working/deck lights are optional or actually required for larger anchored vessels under the Rules.

✅ Before You Answer

• Check in Rule 30 what is mandatory for a vessel of 50 meters or more at anchor (both anchor lights and any additional lighting). • Verify which option correctly matches the requirement for two all-round white lights and any deck illumination for large anchored vessels. • Confirm whether the ‘may show’ wording applies to vessels under 50 m or 50 m and over.