For the next installment in our series of technical articles, ADCP manufacturer Nortek and scientists at NOAA bring us a case study on the use of moored ADCPs from Antarctica.
Hydro-float® Mooring Buoys
DeepWater Buoyancy’s spherical subsurface mooring buoys provide exceptionally reliable buoyancy for a variety of oceanographic, commercial, military and offshore applications. Made from DeepTec® syntactic foam, Hydro-float® Mooring Buoys (HMBs) offer a low-maintenance and cost-effective solution for subsurface moorings and other offshore applications.
Because of their solid construction, these buoys may be cast with through holes and instrumentation pockets on any axis without compromising reliability. Clamps and mounting hardware can be added for any user-supplied instrumentation. HMBs come in many standard sizes and can be customized to meet specific needs. While spheres are used in a wide range of flow regimes, elliptical buoys or streamlined designs, like our StableMoor®, are also offered, further reducing drag on moorings in high current areas. HMB’s can be fitted with integral tail fins providing additional stability while minimizing stress on rigging.
Hydro-float® Mooring Buoys with Galvanized Hardware
Hydro-float® Mooring Buoys with Custom 316L SS Hardware
StableMoor® Hydro-float® Mooring Buoy in Buoyancy Tank
StableMoor® Hydro-float® Mooring Buoy
StableMoor® Hydro-float® Mooring Buoy
Related Media
Instrumenting a Mooring Webinar
Looking to learn more about subsea mooring of instruments? Join the upcoming Teledyne Marine Link webinar.
2020 Oceans Conference and Exhibition
DeepWater Buoyancy is co-sponsoring and exhibiting at the 2020 Oceans Conference and Exhibition virtual event.
Related Products
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StableMoor® Mooring Buoys
For a more extreme current application, turn to the StableMoor® line of buoys. These unique ADCP buoys are customized for your particular application. Accounting for depth, instrument types and current, this design will give you stable data in unstable waters.
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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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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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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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HardBall® Floats
HardBall® Floats provide distributed buoyancy for cable laying, offshore, and oceanographic applications. They are available in a range of sizes and depth ratings. Unlike glass spheres or hollow plastic floats, HardBall® Floats cannot leak or implode. Only the highest strength, epoxy-based DeepTec® syntactic foams are used to form the core — no macrospheres or other high risk materials.
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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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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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