🔍 Key Concepts

• Rule 34 – Maneuvering and Warning Signals in the Navigation Rules • Difference between Inland and International rules for leaving a berth or dock • Meaning of the word "must" (required signal) vs. optional or no requirement

💭 Think About

• Check in Rule 34: under International rules, is there a specific sound signal required when a vessel is moving from a berth? • Which rules (Inland or International) talk about a vessel leaving a dock or berth and requiring a prolonged blast? • If the rule does not explicitly state a required signal for this action under International, what does that imply about what you are obligated to do?

✅ Before You Answer

• Verify in Rule 34 whether the International section contains any sentence about a vessel leaving a berth or dock • Compare that with the Inland version of Rule 34 to see which one mentions a prolonged blast when getting underway from a dock • Confirm whether the question word "must" matches an explicit, written requirement in the International rules