to take control of that. at some point, perhaps as they neared southampton, the stowaways or stowaway had other ideas and decided to take matters into their own hands. but, so far as our source is concerned, they say the crew took refuge in this citadel, so there is no suggestion from that source that any of the crew have been harmed. but whether the stowaway or stowaways have been able to do anything with the ship or are just outside this room, those details are not yet clear. bob sanguinetti is the chief executive of the uk chamber of shipping and former a commodore in the royal navy. thank you very much for being with us on thank you very much for being with us on bbc news. the first thing to ask you is what you've been able to establish about what was going on and what might still be going on board the tanker? i think your reporter duncan has outlined where the situation appears to be but of course, most of it is based on second or third hand information.