"observation buoy"

Durable Subsea Observation Buoy 0.3g/cm3-0.7g/cm3 Spherical Floats

DOOWIN's durable subsea observation buoys offer exceptional buoyancy and corrosion resistance for depths up to 7000m. Made with polyethylene foam and polyurethane coating, these spherical floats feature low water absorption, high pressure resistance, and a 20+ year lifespan. Customizable in size/color, ideal for marine research, warning systems, and vessel marking.