C L DUBEY – EXERCISE – 09 (GROUNDING)

• Trim caused = 450 ⨯ 48/110 ⨯ 100 = 1.964m

Ta = 1.014,
Tf =   ( Tc – Ta)
= 0.95m

Rise = 450/1600 
        = 0.281m

	Fwd	Aft
Draft	4.200m	5.100m
	-0.281m	-0.281m
	3.919m	4.819m
	-0.950m	+1.014m
	2.969m	5.833m

Q4. A vessel of length 120m, Displacement 6400 tonnes, TPC 15 tonnes, MCTC 110tm, Km 6.4m, KG 5.1m, CF 2m for’ d of the midlength grounds on a rock 45m for’d of midlength the tide then by 80 cm.  Calculate the residual GM then.

Solution –

We can calculate fall in tide –

Fall in tide = P/ TPC + ( P x AL / MCTC) + AL/ LBP  
80 =    P/15 + P ⨯ 43/110 ⨯ 43/120
So, P = 386.95 cm.
GG1 = 386.95 ⨯ 6.4/ 6400
= 0.3869m

Residual GM = 0.91m