Lets say they cabled a Goodyear blimp to each side of the ship One Goodyear blimp is about 5,000 m^3 and a meter^3 of seawater is about a ton, so that gives us

Lets say they cabled a Goodyear blimp to each side of the ship One Goodyear blimp is about 5,000 m^3 and a meter^3 of seawater is about a ton, so that gives us 10,000 tones of lifting force!. The ship weighs 220,000 so it will be riding about 4.5% higher in the water. The main channel is very narrow. Its bow is buried about 20m deep and 100m into the shallow bottom outside of the channel. They are not going to lift it out.