The Trelleborg modular Micro buoy, built from syntactic foam with a depth rating of 3,000m, is used when moderate subsea uplift is required. By adding or removing individual units from the flotation stack, uplift can be adjusted in roughly 215-pound increments.
3,000m depth rating
Micro Buoy End Module: 204 lbs uplift each
Micro Buoy Mid-Section Module: 233 lbs uplift each