Before NARA was closed for the Damn Virus, I was going through the microfilm rolls these images are on, using an OLD microfilm reader at NARA. Most photos are of USN warships that can be readily identified. Many have labels on them that ID the date and ship. However, I came across some photos that were of ships I didn't recognize and that could be USCG or even foreign ships being worked on in the USN yards. The following three images is of one of these ships. I took cell phone images of the microfilm reader screen (better reproduction job than the print function on this old machine).
Anyone recognize the ship? There are no visible names or hull numbers. Even which yard the photos were taken isn't clear to me. The USN overhauled Mexican, Cuban, and several South American warships during WWII. This ship could be one of those. It doesn't appear to be a converted "yacht", but may have been a private ship acquired as a patrol craft. The armament consists of two 20-mm guns and a few depth charges.