Bob Duffy submitted a number of scans of photos obtained in an antiques shop in Long Island back in the 1970s.

Does anyone have input on the fourth photo? Not a chaser. A patrol boat of some kind?

Also note the nice shot of depth charges racked on a barge of some type. Can anyone identify the vessel?

Photo Set - click to view large versions
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Deck gun on a chaser. | Bob Duffy Collection
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Deck gun on a chaser. | Bob Duffy Collection
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Manning the deck gun. | Bob Duffy Collection
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Not sure what we're seeing here ... | Bob Duffy Collection
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On a chaser. | Bob Duffy Collection
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Caption: "Fueling from Hippopotamus or Chestnut Hill" | Bob Duffy Collection
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Crewman on a chaser. | Bob Duffy Collection
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Depth charges on a barge of some sort. | Bob Duffy Collection