🔍 Key Concepts

• Rule 24 – Towing and Pushing (look especially at paragraph (g) on inconspicuous partially submerged vessels or objects). • Difference between requirements when the length of the tow exceeds 200 meters and when it is less than 200 meters. • Which day-shapes (ball, diamond, cone, two cones) are associated with tows versus other conditions (e.g., vessels constrained by draft, vessels at anchor, etc.).

💭 Think About

• Identify which specific day-shape is used in the Rules to indicate a very long tow and ask yourself whether that same requirement still applies when the tow is under 200 meters. • Think about why an inconspicuous partially submerged object might need an extra visual warning in daytime. Under what circumstances does the rule say that extra warning (shape) is needed, and when is it omitted? • Match each option (ball, diamond, two cones, single cone, or none) with the situation it normally represents in the Nav Rules, then eliminate any shape that clearly signals a different condition (for example, at anchor, constrained by draft, or sailing with engine on).

✅ Before You Answer

• Verify in Rule 24(g) exactly when a diamond day-shape is required in connection with a tow. • Confirm whether the rule calls for any day-shape at all on the after end of an inconspicuous partially submerged tow when the length is less than 200 meters. • Double-check that you are not confusing the light requirements at night with the day-shape requirements for the same situation.