Tuba and Fleet?
Tuba certainly looked like a Stevens boat, having a transom stern as in these pictures.
Fleet however had a very different back end, simply curving in to the rudder, with no flat back. If it was a Stevens barge it was certainly of a different design to those one normally sees pictured.
I don't know the fate of either but, but would be surprised if either has survived.
The 1393 number on the stern was common to all Stevens boats, I think.
This picture, (taken at Brantom's Wharf, Leighton Buzzard, supports that fact...