BOTH INTERNATIONAL & INLAND By day, you...

BOTH INTERNATIONAL & INLAND By day, you...

Question 1 of 2707066636eeb28f7522a1c51ba5e

BOTH INTERNATIONAL & INLAND By day, you sight a vessel displaying three shapes in a vertical line. The top and bottom shapes are balls, and the middle shape is a diamond. Which vessel are you observing?

Question 1 of 27070

Q

BOTH INTERNATIONAL & INLAND By day, you sight a vessel displaying three shapes in a vertical line. The top and bottom shapes are balls, and the middle shape is a diamond. Which vessel are you observing?

🔍 Key Concepts

• Day shapes for vessels restricted in their ability to maneuver (RAM) • Difference between fishing/trawling shapes and RAM shapes • Meaning of ball–diamond–ball vs shapes used for mineclearing or replenishment

💭 Think About

• Think about what type of work makes a vessel unable to move out of the way easily. Which of the options would seriously limit a vessel’s ability to change course or speed? • Recall which day shapes are used specifically for fishing activities (trawling/trolling) and compare them to the shapes in the question. • Which listed operation has its own unique day signal that does NOT use the ball–diamond–ball pattern?

✅ Before You Answer

• Verify the standard day shape for restricted in ability to maneuver (ball–diamond–ball) in the Navigation Rules, Annex I/Rule 27. • Check what day shapes a fishing vessel (trawler/trolling) shows — especially the two-cone shapes and how they are arranged. • Confirm that mineclearing and replenishment at sea have special additional shapes or lights that are different from the simple three‑shape vertical signal described.