From: A. D. Frost, Sunderland

With regard to E. Sabiston’s articleon the Power of Steam, I would like to point out that the Perang was built at Wm. Gray, Hartlepool (Tacoma City, p.32, built at Wm. Gray, Sunderland). The name of “Doxford Economy” was given to a type of vessel produce by Doxford hence the name, although a lot of general cargo/tramps ships built by various ship yards at the time with Doxford engines had similar engine room layouts where only the ME was diesel driven and every thing else was steam driven making use of the waste heat from the ME, this was a transitional period between steam and diesel powered engine rooms, although its economy was down to this arrangement which gained its popularity.