surface sea buoy: Cylindrical Buoys Chain-Throught Buoys, Pick-Up Buoys. solid but ... point mooring (SPM) systems, the three main types of support buoy are: Cylindrical Buoys, Chain-Throught Buoys, Pick-Up Buoys. ... use. Useing of a polyethylene foam core ensure the buoy will not absorb water even if the skin is punctured ... epoxy paintedSkin Colour: Orange, Yellow and othersPick-Up mooring Buoy