🔍 Key Concepts

• Day shapes for towing vessels under the Navigation Rules • The special requirement when the tow length exceeds 200 meters • Differences between shapes used for towing, aground, and vessels constrained by draft

💭 Think About

• First recall which day shapes indicate a tow in general, then think about what extra indication is required when the tow is over 200 meters • Compare which shapes from the options are used for other situations (like vessel at anchor, aground, or fishing) so you can eliminate them • Ask yourself: which single shape is specifically linked in your memory to a tow that is very long and needs additional warning to other vessels?

✅ Before You Answer

• Verify in the day-shape table that a tow over 200 meters adds a particular shape in addition to normal towing lights/shapes • Confirm which option is associated with a vessel at anchor so you can rule that one out • Double‑check that cones apexes together are used for a different type of vessel (think trawling or fishing), not for long tows