USCG Exam PracticeVessel stability — metacentric height, free surface
Under 46 CFR §28.545, when a vessel lifts a weight over the side, where must the weight of the suspended load be assumed to act unless the load's transverse movement is restricted?
- A. At the vessel's center of gravity
- B. At the heel point of the cargo boom
- ✓ At the tip of the boomCorrect
- D. At the point of attachment of the lifting sling to the load
Why C is correct
46 CFR §28.545(e) states that the weight of suspended loads must be assumed to act at the tip of the boom unless the suspended load's transverse movement is restricted, such as by the use of sideboards. This is a conservative assumption that maximizes the heeling moment.
Cited:46 CFR §28.545