I'd say that
@kjonyou is correct. That area you flew through to the north of the dike around the ship is in controlled airspace with a 100' AGL ceiling if you have a Part 107 ticket and LAANC authorization for the flight.
Check the FAA's SUAS Facility Map at
ArcGIS Web Application. That's slow to load and use, but the FAA's B4YOUFLY app also shows it.
The controlled airspace boundary extends south to the breakwater. It looks like you were legal when directly over the QM, but not on your approach to the area from the north. (Unless you were below 100' AGL with 107 and LAANC approval.)
The FLY app is wrong often enough that it's best not to rely solely on it. The FAA has the last word. I hope you don't get a letter like the one
@zeusfl received a few days ago.
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