Hello,

I am completing a draught surveying course in Aus, i am doing it via correspondence and unfortunately the institute did not supply me with any resources on stability, only on surveying.

I am having some issues working the below questions out. If someone could please help and show me the workings it would be much appreciated.

Thank you in advance.

A vessel of 4500 tonnes displacement and floating upright, fills a port double bottom tank

with 120 tonnes of water ballast. The centre of the tank is 4.5 m from the centre line and has

a VCG of 0.75 m. The original KG of the vessel is 4.5 m. Find the list the vessel will take, if

the KM remains constant at 5.1 m.

- A vessel of 8500 tonnes displacement with a beam of 20 m, KG 6.25 m and KM 7.1 m, lifts

a weight of 45 tonnes with her own gear from the wharf. Height of crane jib is 24.3 m above

the keel and the weight is placed on the wharf 3 m from the ships side. (Displacement does

not include the weight and the KM remains constant).

Find the maximum list the vessel will take as she makes this lift.