On Monday 13th May at 8 p.m. BBC4 is showing the last programme in the series 'Shipwrecks: Britain's Sunken Past'. It will be repeated at 2.55 a.m. on Tuesday 14th May.

Also on Monday 13th May at 11.25 p.m. BBC4 is showing 'Clydebuilt: the ships that Made the Commonwealth'.

On Wednesday 15th May at 8 p.m. BBC4 is showing 'The Golden Age of Liners'.

I do not know how good any of these programmes will be.