For those interested in American Civil War - Glasgow connection there is a very interesting 13.26 minute radio broadcast on the Paddlesteamers Iona 1 and 11.
They ran the blockade from Glasgow for Confederates and both sank in Scottish waters, Iona 1 in Clyde.
I Googled - Paddlesteamer Iona and found Archaeocast 12 as first hit. It has the broadcast which is very easy to listen to.
Ogleway