INTERNATIONAL ONLY In a narrow channel, a...

INTERNATIONAL ONLY In a narrow channel, a...

Question 1 of 31048fy_heal_CREATE_q100_2020

INTERNATIONAL ONLY In a narrow channel, a vessel trying to overtake another on the other vessel's port side, would sound which whistle signal?

Question 1 of 31048

Q

INTERNATIONAL ONLY In a narrow channel, a vessel trying to overtake another on the other vessel's port side, would sound which whistle signal?

🔍 Key Concepts

• Rule 9 – Narrow Channels of the International Regulations for Preventing Collisions at Sea (COLREGS) • The special sound signals used for overtaking in a narrow channel versus the normal port/starboard maneuvering signals (1 or 2 short blasts) • Difference between prolonged blasts and short blasts and when each type is used

💭 Think About

• First, recall what whistle signals are normally used for altering course to port or starboard in open water—do those use prolonged blasts, short blasts, or a mix? • Now think specifically about narrow channels: does the overtaking signal simply repeat the basic maneuvering signal, or is there a special pattern with prolonged plus short blasts? • When overtaking on the port side of the vessel being overtaken, should the short-blast ‘number’ in the signal match ‘port’ (2 short) or ‘starboard’ (1 short), or is the pattern different in narrow channels?

✅ Before You Answer

• Confirm in Rule 9 that there is a distinct overtaking signal for narrow channels (not just the standard 1 or 2 short blasts). • Check which options include prolonged blasts, since overtaking in a narrow channel uses a combination of prolonged and short blasts. • Verify which pattern (one short vs two short) corresponds to proposing to overtake on the port side of the vessel being overtaken.