With my applied mathematics and engineering background, I am trying to get up to speed with these advance-design aspects (paddleboats and railway steam locos are surprisingly similar). Enclosed, a photo of the stately Tamara Rae. The owners have a large boat, with room for a garage on the lower deck. However, it is slower than most other boats (despite having a large and fuel-hungry engine). On the Randell-Cadell run, TR left Swan Hill a day ahead of the mob, then got overtaken. It passed through Torrumbarry lock a day after the others, and caught up at the final-night layover to be part of the triumphal entry into Echuca.
Regards,
Roderick B Smith
Rail News Victoria Editor