From here:
Television presenter Dan Snow joined members of the Pembroke Dock Sunderland Trust Dive Group to explore the wartime Sunderland flying boat T9044, which sank off the town in a storm in 1940.
The visit was filmed and is due to be shown on BBC One’s The One Show in September.
As well as diving on the wartime flying boat, the 360 Production crew also visited the Flying Boat Centre, where Dan interviewed Wing Commander Derek Martin, patron of the Sunderland Trust, who flew T9044 just weeks before it sank.