At about 3:30 p.m. June 15, a not-so-new purple ski boat with four girls and a boy in their late teens hit a solar lighted channel buoy (by the point with the Quonset hut) so hard ...

Nearly 50 feet tall, the buoy is armed with solar panels, ocean sensors and communications ... which absorbs blue light that can be measured from space, researchers said. Not only is it a major ...

The buoy is 10 meters tall, with 3.5 meters visible above the water surface. Image: Ports of Stockholm Remote monitoring will be implemented for the batteries, solar cells, and light signal.