For an upright vessel, draft is the vertical...

Question 1 of 2707066636eec28f7522a1c51c844

For an upright vessel, draft is the vertical distance between the keel and which other item?

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Question 1 of 27070

Q

For an upright vessel, draft is the vertical distance between the keel and which other item?

🔍 Key Concepts

• Definition of draft (draught) for an upright vessel • Difference between draft, freeboard, and load line (Plimsoll mark) • Where the keel and waterline are located on a ship’s profile

💭 Think About

• Visualize a side profile of a ship and mark the keel, the water surface, and the main deck line—between which two points is the underwater depth measured? • Ask yourself: which option represents a moving level that changes as the ship loads or unloads, rather than a fixed mark or structural part? • Consider how mariners determine if a vessel can safely pass over a shallow bar—what two vertical points are they comparing to the charted depth?

✅ Before You Answer

• Confirm the formal definition of draft: it involves the keel and a level related to the surrounding sea, not a structural deck • Distinguish clearly between freeboard (deck to water) and draft (keel to water) • Recognize that the Plimsoll mark is a limit/indicator mark, not the instantaneous point used in the basic draft definition