floor, once this mapping has been completed. the mapping of the ocean floor is currently engaging two vessels. the chinese survey ship and an australian contractor vessel. these are in the areas that have been identified by the atsb. it will take around three months to complete this mapping survey. but that gives crucial information about the nature of the sea floor terrain which make it possible to undertake the underwater search. i repeat that this area has never been comprehensively mapped previously. and so to put new equipment down into that area, without having a clear knowledge of what the sea floor is like certainly risks the operation and the capacity of that equipment to operate safely. now, we expect that the underwater search element will consequence in august and take