The Cameron CB3000, initially built for Skyships, has a payload capacity of 10 kg. and can fly up to 120 m. (400 ft.) above ground level. The tether cable consists of Kevlar fibres for the load and fibre optic and electrical cores for data and power. The winch, frame and water ballast cans provide over 300 kg. of ballast. It takes under one minute to raise or lower the aerostat to and from its maximum altitude.