When computing gross Under Keel Clearance,...

Question 1 of 31048fy_heal_CREATE_q386_2027

When computing gross Under Keel Clearance, what factor should be considered?

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Question 1 of 31048

Q

When computing gross Under Keel Clearance, what factor should be considered?

🔍 Key Concepts

• Under Keel Clearance (UKC) = depth of water minus ship’s deepest draft • Difference between environmental allowances (like tide, swell, squat) and structural features (like freeboard) • How tides and predicted water levels can differ from what actually occurs

💭 Think About

• Which of these options directly affects the actual water depth under the keel, not conditions above the waterline or on deck? • For safe UKC planning, what could cause the real tidal height to be different from the predicted tide tables? • Which allowance would you include so that if the tide does not reach the predicted height, you still maintain a safety margin under the keel?

✅ Before You Answer

• Confirm that UKC is concerned with below-keel clearance, not height above waterline • Identify which choice is related to variations from predicted tidal heights • Eliminate any options that mainly affect stability or topside weight rather than seabed clearance