Buoys Help Avert Whale-Ship Collisions : Image

WHOI Senior Engineer Don Peters and colleagues replaced noisy couplings throughout the mooring system with hard-bolted mechanical connections that reduced noise and solved the “two-Dixie-cups-and-a-string problem.” Sound travels efficiently along any tense string, such as a mooring line. Any mechanical noise on the line would be picked up by the hydrophones. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)