🔍 Key Concepts

• Rule 35 – Sound signals in restricted visibility of the Navigation Rules • Different requirements for vessels at anchor based on length (under 12 m, 12–20 m, over 100 m, etc.) • The specific wording of what sound device is required versus the exact pattern that must be used

💭 Think About

• First decide which length category a 15-meter vessel falls into under Rule 35 and what that category is required to carry or sound at anchor • Compare which answer choices describe a specific required pattern versus those that sound like they might be used for larger vessels (e.g., over 100 m) or underway vessels • Ask yourself: does Rule 35 for a 12–20 m anchored vessel require a bell with a specific pattern, or does it give more flexibility compared with larger ships?

✅ Before You Answer

• Verify in Rule 35 what it says exactly for a vessel of 12 m or more but less than 20 m at anchor • Check whether the Rule mandates a bell and a particular sequence (rapid ringing, three strokes, etc.), or only that an efficient sound signal be made at certain intervals • Confirm the required time interval between signals (e.g., every minute vs. every two minutes) for this size vessel at anchor