Float arms for underwater camera rigs

Float arms are buoyancy devices designed to reduce the in-water weight of a housing setup. They connect to trays and clamps to improve stability, handling and positioning during dives.

By countering the heavy mass of housings, strobes and video lights, float arms make it easier to achieve neutral buoyancy. This lowers physical strain and supports steadier filming over long durations.

How float arms improve stability

Float arms work by adding displacement that generates upward lift. The effect depends on the arm’s size and internal volume, with larger dimensions producing stronger lift values.

Short arms allow precise balance adjustment
Large-diameter arms give extra lift for heavier rigs

Materials and construction details

Most float arms are made from aluminium combined with foam or carbon fibre segments. Their sealed designs stop water ingress and ensure buoyancy remains consistent at depth.

Options range from small arms for shallow dives to stronger versions used in technical diving beyond 60 m (≈197 ft). Material choice influences both weight and durability.

Choosing the right buoyancy configuration

Selection depends on the total mass of the equipment and the amount of lift required. Combining different arm sizes helps divers reach stable, neutral buoyancy in varied conditions.

For related components, see trays & arms and strobes & lights. For background reading, consult the underwater buoyancy control guide.

Compensates for heavy housings and lights
Supports neutral buoyancy and camera stability
Different sizes yield adjustable lift
Durable sealed construction for depth use
Combine arms to fine-tune balance

Float arms