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			Heslop explains that the fording maximum is set at 900mm "because after that it floats". Land Rover has a test where the vehicle is put into a water tank at up to 30 per cent greater depth than it claims, all the doors are opened and the vehicle left for an hour, before the poor test engineer has to wade back in and check the vehicle will restart and crawl its way out of the flood. I ask whether climbing on to the roof and yelling for help might be a better solution, but Heslop points out that there are parts of the world where no one will hear you shout, or at least no one you want to come and rescue you.