USCG Exam Practice · Vessel stability — metacentric height, free surface
A commercial fishing vessel operates north of 42°N but south of 66°30'N latitude between November 15 and April 15. Under 46 CFR §28.550, what is the minimum assumed ice weight per square foot of horizontal projected area that must be used in stability calculations?
- A6.14 pounds per square foot
- B3.07 pounds per square foot✓ correct
- C1.54 pounds per square foot
- D4.60 pounds per square foot
Why B is correct
46 CFR §28.550(c) requires vessels operating north of 42°N but south of 66°30'N to use at least one-half of the values in §28.550(b). The full value for horizontal projected area is 6.14 lb/ft², so one-half equals 3.07 lb/ft².
Cited:46 CFR §28.550
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