You are on a 120,000 DWT loaded bulk...

Question 1 / 2707066636ee728f7522a1c517336

Question 1 of 2707066636ee728f7522a1c517336

You are on a 120,000 DWT loaded bulk carrier. What is the maximum safe docking speed when coming alongside?

Question 1 of 27070

You are on a 120,000 DWT loaded bulk carrier. What is the maximum safe docking speed when coming alongside?

🔍 Key Concepts

• Kinetic energy on impact increases with both displacement (DWT) and speed • Rule‑of‑thumb relationships between ship size and maximum berthing (docking) speed • How small changes in speed cause large changes in impact force on fenders and quay

💭 Think About

• Compare how much kinetic energy changes if you double the docking speed. How does that affect the safety margin for a 120,000 DWT ship? • Think about typical berthing speeds used by pilots for very large bulk carriers: are they closer to tenths of a foot per second, or closer to one foot per second? • Eliminate any option that would likely create excessive fender loads for such a large vessel by thinking about how a small increase in speed greatly increases impact energy.

✅ Before You Answer

• Estimate which speed range would keep impact energy low enough for a 120,000 DWT ship: well below 1 ft/s, or closer to 1 ft/s? • Check which choice best matches conservative pilotage practice for very large ships coming alongside in normal conditions (not emergencies). • Verify that the chosen speed leaves a large safety margin for fender strength and mooring line loads when something unexpected happens during the final meters before contact.

Question 1 of 27070

You are on a 120,000 DWT loaded bulk carrier. What is the maximum safe docking speed when coming alongside?

0.5 foot per second (0.30 knot)

0.2 foot per second (0.12 knot)

0.1 foot per second (0.06 knot)

0.75 foot per second (0.44 knot)

Question 1 / 2707066636ee728f7522a1c517336

Question 1 of 2707066636ee728f7522a1c517336

You are on a 120,000 DWT loaded bulk carrier. What is the maximum safe docking speed when coming alongside?

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Question 1 of 27070

You are on a 120,000 DWT loaded bulk carrier. What is the maximum safe docking speed when coming alongside?