hello and welcome to the programme. coastguards are intensifying the search for a missing submersible near the wreck of the titanic in the north atlantic, as estimates suggest the five men on board could run out of oxygen in less than 20 hours. more surface vessels and remotely operated submarines arejoining in and the rescue area has widened. our news correspondent carl nasman is in boston and has been telling me about the search. it s taking shape and it s taking on some new urgency as well with that confirmation that we are getting that some sort of noise or sounds were detected by canadian search teams. this was on tuesday, even into wednesday morning. we still don t know exactly what or who were making these sounds or even the exact location. but what it s also doing is giving these search teams a glimmer of hope. my colleaguejohn sudworth has more. every available asset is being thrown at one of the most difficult sea searches ever undertaken. these are the latest image
these sounds or even the exact location. but what it s also doing is giving these search teams a glimmer of hope. my colleaguejohn sudworth has more. every available asset is being thrown at one of the most difficult sea searches ever undertaken. these are the latest images from the scene around 400 miles from the nearest point of land. it s been three days since the titan vanished without a trace, and there s thought to be less than 24 hours of air supply left. but a glimmer of hope has come from the us coast guard with the confirmation that banging noises have been detected in the search area. when you re in the middle . of a search and rescue case, you always have hope. that s why we re i doing what we do. with respect to the noises specifically,| we don t know what they are. to be frank with you, -