May 2022 Nav Arc 1

Q.2 A vessel of L = 140 mt, W = 16000t, MCTC = 190, TPC = 24t, LCF = 72m, KM = 8.20m, KG = 7.20m, FSM = 1370mt, draft = Fwd = 6.68m, Aft = 8.84m grounds on an isolated rock, the draft then are fwd 5.88 and aft 9.28m. Calculate following:
i) The up thrust provided by the rock.
ii) The position with respect to after perpendicular, where the grounding occurred.
iii) The virtual GM (f) of the vessel then.

Answer: