A vessel carries three slack tanks of gasoline (SG .68). The vessel's displacement is 8,000 tons. Each tank is 50 ft. long and 20 ft. wide. What is the reduction in GM due to free surface with the vessel floating in sea water (SG 1.026)?
A. 0.20 feet B. 0.24 feet C. 0.28 feet D. 0.30 feet
A. 0.20 feet B. 0.24 feet C. 0.28 feet D. 0.30 feet
FS Corr = rlb^3/12(displaced volume)
ReplyDeleter = 0.68/1.026 = 0.662678
l = 50 ft
b = 20 ft
displaced volume = 8000 T * 35 cuft/ T = 280,000 cuft
There are 3 tanks so we need to multiply the answer by 3 !
3[0.662678x500x20^3/12x280000 = 0.2367 ft or 0.24 ft
Choice B is the best answer.
3((0.68/1.026)(50)(20^3)/(420*8000))=0.236702868 or 0.24
ReplyDelete(35*12)=420 SW constant
ANS:BRAVO