The Nauticam 50x250mm Carbon Fiber Aluminum Float Arm adds approximately 240g / 0.53 lb of positive buoyancy to help balance heavy underwater camera, housing, port, and lighting systems. Its sealed carbon fiber construction provides reliable buoyancy at depth while doubling as a streamlined strobe or video-light arm.

Ideal for underwater photographers looking to reduce wrist fatigue and create a more comfortable, neutrally balanced camera rig.

• Provides approximately 240g / 0.53 lb of positive buoyancy
• Pack of Two
• 250mm arm length
• 50mm diameter
• High-quality carbon fiber tube construction
• Machined aluminum ball ends
• Internal aluminum spine reinforces the complete arm assembly
• O-ring sealed for watertight integrity
• Designed to maintain buoyancy at depth
• Helps offset heavy housings, dome ports, strobes, and accessories
• Streamlined alternative to bulky foam floats
• Integrates into Nauticam arm and clamp systems
• Helps improve underwater handling and reduce wrist fatigue
• 2-year manufacturer warranty
• Nauticam SKU 72267

Long Description

Make a Heavy Underwater Camera Rig Easier to Handle

As an underwater camera system grows, so does its negative buoyancy. Large dome ports, strobes, video lights, lenses, adapters, and other accessories can turn an otherwise comfortable system into a rig that constantly pulls downward during a dive.

The Nauticam 50x250mm Carbon Fiber Aluminum Float Arm combines a traditional lighting arm with approximately 240g / 0.53 lb of positive buoyancy, helping offset that underwater weight without requiring bulky external foam floats.

The result can be a more comfortable and better-balanced camera system that's easier to position while composing photos and video.

240g of Positive Buoyancy

Each 50x250mm float arm provides approximately 240g of effective buoyancy.

Using two matching arms provides approximately 480g / 1.06 lb of combined positive buoyancy before accounting for the weight and displacement of other components in the system.

This makes float arms particularly useful for rigs equipped with:

• Large dome ports
• Heavy macro lenses and adapters
• Dual underwater strobes
• Video lights
• Monitor or recorder systems
• Additional clamps and mounting hardware

Instead of fighting a negatively buoyant camera throughout the dive, strategically adding buoyancy can bring the complete system closer to neutral.

More Comfortable Underwater Photography

A well-balanced underwater camera isn't just more comfortable—it can also be easier to shoot.

Reducing excessive negative buoyancy means less effort is required to hold the housing at eye level or maintain a precise composition. This can be especially helpful during long dives, macro sessions, and video shooting where the camera may need to remain steady for extended periods.

It can also reduce the amount of force placed on your wrists as you swim and reposition the housing.

Mozaik Tip: The goal isn't necessarily to make your camera system positively buoyant. Most photographers prefer a rig that is approximately neutral or slightly negative underwater so it remains easy to control without constantly trying to float upward.

Carbon Fiber Buoyancy That Performs at Depth

Traditional foam floats can be an inexpensive way to add buoyancy, but foam can compress as depth and pressure increase.

Nauticam states that its carbon fiber arms do not measurably compress even at 100 meters / 330 feet, allowing them to maintain their effectiveness at depths where foam-based solutions may lose buoyancy.

This makes the carbon fiber float-arm design particularly attractive to divers who want predictable buoyancy throughout a dive.

Strong Internal Construction

The arm isn't simply a hollow carbon fiber tube.

Nauticam uses high-quality carbon fiber tubing, molded end caps, machined aluminum balls, O-ring seals, and an internal aluminum spine that connects the assembly. Nauticam states that this construction makes the arm stronger than an equivalent arm machined from solid aluminum alone.

The O-ring seals maintain watertight integrity so the internal volume can continue providing buoyancy underwater.

Buoyancy and Lighting Support in One Component

One of the biggest advantages of a float arm is efficiency.

Instead of adding a separate flotation accessory to an existing lighting arm, the Nauticam float arm performs both jobs. It provides the articulation needed for positioning a compatible strobe or video light while simultaneously adding buoyancy to the system.

The 250mm length also gives photographers useful reach for moving strobes farther away from the housing—particularly helpful when positioning lights for wide-angle photography and managing backscatter.

Build the Balance Around Your Rig

Underwater camera systems vary significantly in buoyancy. A compact mirrorless housing with a small port may need very little correction, while a large housing with a glass dome, dual strobes, and accessories can require substantially more.

Nauticam offers float arms in different dimensions and buoyancy ratings so photographers can select components based on the amount of lift their particular system requires.

That also gives you a clear upgrade path. If you later move to a larger port, heavier strobes, or a different camera system, your arm and buoyancy configuration can be adjusted rather than replacing the entire lighting platform.

Who Is This Float Arm Best For?

The Nauticam 50x250mm Carbon Fiber Float Arm is particularly useful for:

• Underwater photographers with negatively buoyant camera systems
• Mirrorless and DSLR housings
• Large dome-port configurations
• Dual-strobe systems
• Underwater video rigs
• Photographers experiencing wrist fatigue
• Divers who want a streamlined alternative to foam floats
• Deep divers who want more consistent buoyancy performance at depth
• Photographers building a modular Nauticam arm and clamp system

Technical Specifications

Brand: Nauticam
Product: Carbon Fiber Aluminum Float Arm
SKU: 72267
Length: 250mm
Diameter: 50mm
Effective Buoyancy: Approx. 240g / 0.53 lb
Tube Material: Carbon fiber
Ball Material: Machined aluminum
Construction: O-ring sealed with internal aluminum spine
Warranty: 2 years

Top Features

1. 240g Positive Buoyancy
Helps offset the underwater weight of housings, ports, strobes, and accessories.

2. Carbon Fiber Construction
Lightweight, strong construction designed to maintain buoyancy at depth.

3. 250mm Arm Length
Provides useful lighting-arm reach while simultaneously adding flotation.

4. Better Underwater Balance
Helps reduce wrist fatigue and makes heavier camera systems more comfortable to handle.

5. Modular Upgrade Path
Integrates into Nauticam's arm and clamp ecosystem so buoyancy can be adjusted as your camera system grows.