https://www.openstreetbrowser.org/#map=16/24.7050/-77.7656&categories=military
24.705556, -77.769167

Wikipedia EN: https://en.wikipedia.org/wiki/Atlantic_Undersea_Test_and_Evaluation_Center

AUTEC is an undersea laboratory built for testing and improving weapons and tracking technology for the US Navy.

BSR entries (6): AUTEC Big Wood Cay – AUTEC Golding Cay – AUTEC Great Stirrup – AUTEC High Point Cay – AUTEC Main Base – AUTEC Salvador Point