Their desperate family, including Shahzada's wife Christine and daughter Alina, are now enduring an agonising wait for any news of the pair – hoping in vain that they could somehow be found thousands of feet underwater before the oxygen onboard runs out in around 45 hours.
But former Royal Navy commander Ryan Ramsey, 53, today warned there is 'no way' of rescuing the crew if the tiny craft is still thousands of feet under the sea because the technology required 'doesn't exist'.
However, the vessel could well be floating on the surface of the water, meaning it will be easier for rescue crews to locate the submarine before the air runs out.