There, the astronomer Jean Piccard devised an impressively complicated method of triangulation involving quadrants, pendulum clocks, zenith sectors, and telescopes.
This statement is one of the most fundamental rules of geometry, and the basis for practical applications, like constructing stable buildings and triangulating GPS coordinates.
And then the team at Rhode Island has another buoy that's more of like a test platform trying out some advanced sensors that can help you triangulate the location.