🔍 Key Concepts

• International Rules only – this light configuration does NOT exist in the Inland Rules the same way • Meaning of "constrained by her draught" versus "restricted in her ability to maneuver" and "not under command" • Which Navigation Rule covers special lights for vessels constrained by their draught and whether these are in addition to or instead of normal power‑driven lights

💭 Think About

• Look up the specific rule for vessels constrained by their draught and note exactly how many all‑round lights and what color are prescribed • Ask yourself: does a vessel constrained by her draught still show the normal power‑driven vessel lights when making way, or are those lights replaced? • Compare the required lights for a vessel not under command and a vessel restricted in her ability to maneuver and see if either one matches the description for a draught‑constrained vessel

✅ Before You Answer

• Verify in the rule if the three all‑round lights are red or another color, and whether they are in a vertical line • Confirm whether the rule says "may exhibit… in addition to" or anything that would imply replacement of the usual power‑driven lights • Double‑check that a vessel constrained by her draught has its own distinct light signal, not the same as not under command or restricted in ability to maneuver