Based on the numbering on the boat, this was the SP-354, commissioned as the USS Wandena during WWI. This photo was part of a set saved by Great Grandma Olga, presumably sent to her by her brother Earl who was in the Navy during WWI. I found evidence that this particular boat served as a patrol boat in the NY Harbor from 1917-1919, and given that there are a batch of photos that all appear to be taken around the same place/time, there must have been some kind of exercise or training during which he took these photos. I tried doing a quick google search to see if there were any other photos of this vessel to match it up by its features, but none appear to exist (at least on the internet), so I’m glad to be able to post this one, even if it’s a bit grainy and not terribly clear.