When computing gross under keel clearance...

Question 1 of 31048KaYuZ5taZWM3BT9SmdqB

When computing gross under keel clearance (UKC), what factor should NOT be considered?

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Question 1 of 31048

Q

When computing gross under keel clearance (UKC), what factor should NOT be considered?

🔍 Key Concepts

• Under Keel Clearance (UKC) is the minimum distance between the ship’s keel and the seabed • Distinguish between allowances related to ship motion/behavior (squat, heel, waves) and those related to water properties • Company or port UKC policies usually list specific allowances that are added together

💭 Think About

• Which of these allowances directly affect how deep the ship effectively sits or moves vertically in the water near the bottom? • Is there a standard set of dynamic factors (ship and sea motions) that are typically included when calculating gross UKC? • Which option relates more to water density/buoyancy rather than a dynamic clearance margin?

✅ Before You Answer

• Identify which items are dynamic motion allowances (how the ship moves or changes draft while underway) • Decide which factor is usually handled through draft correction / displacement rather than UKC margin additions • Verify which three options commonly appear together in UKC policy or pilotage guidance as standard components of gross UKC