We almost "ran into" those last September right near the mouth of the Sakonnet as we were Seaward bound, and we were wondering the same thing. They were between Sachuest Point and Cormorant Rock/Reef. They're not charted as a fish trap area. I took a wide turn aound them, as I didn't know what/if anything was stretched between them. For me, it was only two barrels that I saw, spaced a couple hundred feet apart. Maybe they marked the ends of a net ??
Anyone know?