And of course, many solutions have been tried -- from wave-actuated devices to surface drifters to sun-powered electrical drives -- each with their own compromises.
Tentu saja, banyak solusi yang pernah dicoba.. dari peralatan bertenaga gelombang ke peralatan deteksi terapung.. ke perangkat bertenaga matahari.. masing-masing mempunyai keterbatasan.