Tug Asterix capsized in Fawley, one crew bravely rescued another
BBC: The men were working on the 13-meter tug Asterix at the Fawley marine terminal when it turned over in strong winds just after 20:00 BST on Mar 31.
The first crew member managed to jump clear and swim to safety.
A colleague jumped into the water after he spotted the arm of the second crew member through the window of the upturned vessel. He smashed the window and managed to pull him out.
Both men were pulled from the water by RNLI lifeboat crews just before the tug sank.
Matt West of the Maritime and Coastguard Agency said: "It was such a severe incident to happen to a vessel - in the conditions it's fantastic that both of them were able to get away safely."
The trapped man was taken to hospital suffering from hypothermia.