 This liquefaction should reduce the friction between grains of sand and in turn, friction between the ship and sand.Whether this would have been effective in this case is unknown as "Pasha Bulker" was lying on rock as well as sand and the ship would have had to be pulled up and over the rocks.Final preparations to refloat the ship began on 28 June 2007 when the ballast water, added earlier to stabilise the vessel, was pumped out to aid buoyancy.