🔍 Key Concepts

• Navigation Rules Rule 25 – Sailing Vessels and Vessels Under Oars • Day shapes for sailing vessels also being propelled by machinery (sail + engine on) • Which types of vessels have special day shapes: fishing, RAM (restricted in ability to maneuver), sail + power

💭 Think About

• Which specific vessel condition does the cone, apex downwards day shape identify during daytime? Think: what is this shape warning other vessels about? • Compare the required day shapes for a vessel engaged in fishing and for a vessel restricted in her ability to maneuver—do either of these normally use a single cone, apex downwards? • Look at Rule 25 carefully: which subsection describes a vessel under sail that is also using her engine, and what shape does it mention?

✅ Before You Answer

• Verify in Rule 25 which vessel must show one black cone, apex downwards, in the daytime. • Confirm that fishing vessels and restricted in ability to maneuver vessels have different day shapes (not a single cone, apex down). • Check the length condition: does the rule apply starting at or below a certain vessel length, and does that match any of the specific lengths in the options?