This Product Spotlight focuses on DeepWater Buoyancy’s shallow water Instrument Bottom Mounts.
StableMoor® Mooring Buoys
Specifically engineered for high current applications, the StableMoor® is designed to reduce drag and increase mooring stability in extreme flow regimes. By decreasing frontal area (compared to our standard spherical buoys) and increasing dynamic stability in high current areas, the StableMoor® minimizes mooring inclination and excursions.
The StableMoor® is cast from a buoyant core of solid DeepTec® syntactic foam and wrapped in a protective layer of GRP that provides a smooth and durable exterior. The high-strength GRP tail and 316L stainless steel mooring swivel allow for smooth transitions from changes in current direction and provide increased directional stability. Best of all, instruments can be installed and removed in minutes without the need to disassemble the unit.
This versatile instrument platform can be provided with single or multiple instrument wells to support upward, downward, or upward and downward looking configurations.
Models with two instrument wells can be fitted with a single ADCP cable to an external battery case or with other instrumentation. Instrument wells can be covered by an LDPE acoustically transparent window, further reducing drag without compromising instrument performance. Like other DeepWater Buoyancy mooring products, the StableMoor® can be customized for acoustic modems and supplied with pockets for mooring location devices, CTDs, and other remote sensing equipment.
Contact Us
To get assistance in choosing or configuring the correct product, to obtain a quote, or to place an order, please contact us.
Custom 3-fin StableMoor co-designed with Scripps Institution of Oceanography, UC San Diego 
Closeup of ADCP and instrument clamps on a custom 3-fin StableMoor co-designed with Scripps Institution of Oceanography, UC San Diego 
Closeup of ADCP well filler on a custom 3-fin StableMoor co-designed with Scripps Institution of Oceanography, UC San Diego 
StableMoor® ADCP Buoy for Bedford Institute of Oceanography - Dockside
StableMoor® ADCP Buoy for Bedford Institute of Oceanography
StableMoor® Deployment National Renewable Research Laboratories and University of Washington APL
StableMoor® Buoy Deployment Dalhousie University
StableMoor® Recovery Dalhousie University
StableMoor® ADCP Buoy for NREL Turbulence Studies
StableMoor® ADCP Buoy for NREL Turbulence Studies - Side View 
StableMoor® ADCP Buoy Tail View
StableMoor® ADCP Buoy Tail Ring Detail
StableMoor® ADCP Instrument Clamp with Teledyne RDI Sentinel ADCP
Universal ADCP Clamp
StableMoor® ADCP Buoy Instrument Clamps
StableMoor® ADCP Buoy with Upward and Downward ADCP WellsRelated Media
Exhibiting at IPF 2025
DeepWater Buoyancy is exhibiting at Oceantic Network’s International Partnering Forum on April 28-May 1, 2025 in Virginia Beach, VA.
Ocean Business 2025
DeepWater Buoyancy will be exhibiting at Ocean Business 2025 at the National Oceanographic Centre in Southampton UK.
Related products
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Spherical ADCP Buoys
Manufactured from high-performance DeepTec® syntactic foam and fitted with 316L stainless steel and titanium hardware, spherical ADCP Buoys are designed to outperform and outlast conventional mooring flotation. Available with depth ratings from 200m to 6000m, they require minimal maintenance and are extremely durable under the most rigorous deepwater conditions.
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ADCP Inline Mooring Frames
Our in-house engineering and metal fabrication capabilities can identify a standard frame for your application or customize one to suit your needs. Working in stainless steel, aluminum or titanium, we can get your frames in line.
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Hydro-float® Mooring Buoys
DeepWater Buoyancy’s subsurface mooring buoys are more versatile and reliable than conventional hollow glass or metal floats. The buoys may be cast with through holes and instrumentation pockets on any axis without compromising their strength because of their solid construction. Clamps and mounting hardware can be added for any user-supplied instrumentation.
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UpdatedInstrument Bottom Mounts
Whether your bottom mount requirement is for a mid-frequency or high-frequency ADCP, we can accommodate you. These diver-serviceable units can be produced to accept your ADCP, battery, CTD, acoustic modem or other instrument. The popular BTM-AL50 is now offered in both welded and collapsible versions.
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Elliptical ADCP Buoys
These buoys are have the same rugged design as the spherical ADCP buoys, but have an elliptical shape for higher current applications. Available with depth ratings from 200m to 6000m.
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Trawl-Resistant Bottom Mounts
These TRBMs may be deployed by free-fall, or by a diver or ROV. They have a double axis gimbal inside a buoyant recovery pod, and are designed to permit retrieval of all mounted instruments. An optional Spectra line pack can be provided for recovery of the base for turnaround deployments. Our TRBMs are available in depths of over 500 meters. We also offer disposable concrete bases.
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Mooring Line Cable Fairing
Under certain flow conditions, taut mooring lines can vibrate or “strum”. The strumming is caused by vortices that result from the water passing over the line diameter. Strumming not only creates cable fatigue, it can have a detrimental effect on instruments in the mooring string. Our cable fairings reduce strumming by eliminating this vortex action. The result is a reduction in both strumming and drag.
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