Stability – I : Chapter 7

Case – 2

Ship’s weight
KG
VM
15000t 7.9m 118500tm
(+ )200t (loaded) 12m +2400tm

Final W   =  15200                                                               Final VM = 120900 tm

We know that:-

Final KG =   (Final VM) / (Final W)
Final KG   =   (120900/15200)
=7.954m.

  1. On a ship of 11000 t displacement KG7.2m a shore crane is used to shift a heavy-lift from the UD (KG 12m to the LH (KG 3m ) . Find the kg of the ship (a) during shifting is (b) after shifting .
Solution :

Case -1

Ship’s weight
KG
VM
11000t 7.2m 79200tm
 (-)180t (while shifting) 12m (-)2160tm

Final W =  10820t                                                            Final VM = 77040 tm

We know that:-

Final KG =   (Final VM) / (Final W)
Final KG   = 77040 / 10820
= 7.120m

Case – 2

Ship’s weight
KG
VM
11000t 7.2m 79200tm
180t (After shift) (12-3)m (-)1620tm

Final  W = 11000                                                        Final VM =   77580tm

We know that:-

Final KG =   (Final VM) / (Final W)
Final KG = (77580/11000)
= 7.053m.

About the author

Amit Sharma

Graduated from M.E.R.I. Mumbai (Mumbai University), After a brief sailing founded this website with the idea to bring the maritime education online which must be free and available for all at all times and to find basic solutions that are of extreme importance to a seafarer by our innovative ideas.

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