Deck General · Ship Construction — Draft Marks
Draft marks on the bow and stern are read to determine:
- AThe vessel's speed
- BWind direction
- CHow deep the vessel is floating (and, with both, her trim)✓ Correct
- DCargo temperature
Explanation
Draft marks show the depth of the keel below the waterline forward and aft. Comparing forward and after drafts gives the trim; the mean draft relates to displacement via the hydrostatic tables, the basis of a draft survey.
Authority: Load Line Convention; ship operations
Practice the full Deck General bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Deck General questions
- Stability Definitions
Displacement is best defined as:
- Stability Definitions
Deadweight tonnage (DWT) is defined as:
- Stability Definitions
Lightship displacement includes:
- Stability Definitions
Freeboard is measured from the:
- Stability Definitions
Reserve buoyancy is best described as:
- Stability Definitions
The mean draft of a vessel is 18 feet forward and 22 feet aft. What is the trim, and in which direction?