buoy ready to start work in the Gulf Stream in late 2005. At deployment, this was the state of the art ASIMET buoy: Surlyn foam hull, rectangular tower, enlarged tower top with open interior, short, battery-less titanium sensor housings.
Even this modern buoy has indications of future improvements. The egg-beater-shaped sensor just right of the yellow line is a sonic anemometer. More accurate than the propeller-shaped anemometers, this sensor may be standard on ASIMET systems by 2008. (photo courtesy Robert Weller, WHOI)