Product Spotlight - MiniMod Small Modular Buoy

DeepWater Buoyancy is one of the world’s premier producers of subsea buoyancy products. Its portfolio of products includes standard and custom solutions for all subsea markets including ocean science, offshore energy, and military.

This month’s product spotlight focuses on DeepWater Buoyancy’s Instrument Bottom Mounts. The line of BTM-AL50 bottom mounts is designed for ADCP deployment in shallow ocean waters, rivers, coastal areas, and anywhere else where the size and remote recoverability of the AL-200 and AL-500 TRBM are not required.

Purpose-Built for Stability and Versatility

Our BTM-AL50 Instrument Bottom Mounts are designed to provide a stable platform for deploying ADCPs, current meters, and other oceanographic instruments directly on the seabed. Whether you’re working in shallow coastal waters or lakes, these mounts offer the durability and performance needed for long-term deployments.

Each Bottom Mount is constructed from high-strength, corrosion-resistant materials and is designed for ease of customization. From single-instrument setups to complex multi-sensor arrays, our mounts can be tailored to meet your specific project requirements.

Key Features

  • Robust Construction – Built with marine-grade aluminum for long-term durability in harsh subsea environments.
  • Flexible Design – Easily adaptable to accommodate a variety of instruments and deployment scenarios.
  • 2-axis Gimbal – Precision-machined gimbal ensures ADCPs are held securely and aligned properly.
  • Counterweights – Optional counterweight system available for lighter instruments
  • Deployment Flexibility – Compatible with diver deployment, ROV handling, or over-the-side operations.
  • Recovery Options – Originally designed to be recovered by divers, the units can be outfitted with our Pop-Up Buoy Recovery Systems
DeepWater Buoyancy Diver-Serviceable Bottom Mount

A and B

The Instrument Bottom Mounts come in two varieties.

BTM-AL50-A

This traditional welded unit can be deployed by diver or lowered to the seafloor by line from small vessels. Instrumentation is easily accessible for battery change out or maintenance.

BTM-AL50-B

Like the traditional unit in all other ways, this robust bottom mount is collapsible for ease of transportation and lower shipping costs. The pinned and bolted design makes for a quick and easy assembly. 

New Brace for Collapsible Bottom Mount

The collapsible version of the bottom mount, the BTM-AL50-B, has a number of unique benefits including ease of handling and transportation.  It also allows users to deploy from smaller vessels.

Recently, we found that users were utilizing these units for applications where their greater payload would have been better suited for the welded version, the BTM-AL50-A.  Our designers went to work and produced a field retrofittable and installable brace kit.  Once installed, the brace increases the rigidity of the assembly rivaling the welded design.

DeepWater Buoyancy Diver-Serviceable Bottom Mount

Need a custom solution?

We specialize in adapting our designs to meet unique deployment challenges. Contact us to discuss your project and let us help you build the right bottom mount for your mission.

Contact Us
Learn More About Instrument Bottom Mounts

About DeepWater Buoyancy, Inc.

DeepWater Buoyancy creates subsea buoyancy products for leading companies in the oceanographic, seismic, survey, military and offshore energy markets.   Customers have relied on our products for over forty-five years, from the ocean surface to depths exceeding six thousand meters.

Learn more at DeepWaterBuoyancy.com

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