110-Foot U.S. Submarine Chaser - Instructions, Care and Operation of Machinery Plant.
This is essentially the same as the engine manual for the Elco ML boats:
80-Foot Elco Submarine Chaser - Instructions, Care and Operation of Machinery Plant
Both vessels used the Standard Motor 220-HP gasoline engine. The 110' chaser had three; the ML boats had two.
Nicely illustrated engine manual, with a number of fold-out technical diagrams of the engines and components.
This title comes up on eBay from time to time, sometimes at a reasonable price (I have purchased a number of them at $30 or so), and sometimes at a "Wow, I really have a gold-mine, here" price ($200 or more). Pass on the silly prices; just watch for a while, and you'll find one.