The Deltic also powered the USN Nasty Class Patrol Boats (https://en.wikipedia.org/wiki/United_States_Nasty-class_patrol_boat)
In 1972, I had a FRiend whose brother was involved in overhauling the PTFs in Subic Bay, RP. He arranged for several of us to get a ride on a PTF after the overhaul was complete.
The PTF had two Deltics; 6200 hp! I will tell you that was one Hellofaboat!
That day is one of my more memorable days in WESTPAC!
That is a great story!