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The detailed technical drawings of all the typical sizes of Donut Buoys, followed by data tables with weights, sizes, and other details.
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About our new MODULAR anchor pendant (DONUT) buoys
Modular
Anchor-Pendant Buoys, better known as “Donut Buoys” due to their shape, are a
specialized rotating steel core buoys with two or four modules attached to the
sides.
Their rotating steel core
is surrounded by specialized polyethylene foam, and covered with a soft skin
that brings them resistance to impacts, sudden movements, and makes them
suitable for harsher environments.
Donut Buoys are a type of heavy duty support buoy, connected to a segment of a mooring line, typically on offshore or deep water environments.
Standard Weights & Sizes
NOTE: Weight in kg. Measurements in mm.
These are our standard dimensions, after product customization deviation margins might apply.
Smaller Sizes
|
2-4 |
4-8 |
2-8 |
2-11 |
| NB |
4,000 |
8,000 |
8,000 |
11,000 |
| Buoyancy |
6,000 |
12,000 |
10,900 |
16,800 |
| Weight |
2,000 |
4,000 |
2,900 |
5,800 |
Data Buoys can be built in sizes as small as 20 kgs of Buoyancy. Our standard sizes start at 1 ton of buoyancy, and up to 2.2 Tons of buoyancy for the Offshore applications in industries such as the Oil & Gas, or even Offshore Wind. These buoys are between 1.5 and 2.3 meters, they are large, stable, and allow heavy instrumentation to reliably be installed on top, with accessories such as solar panels, processing units, and anything that the customer decides to install on their large surfaces. Smaller and larger sizes are available upon request without inconvenience, as we are specialized not only on standard sizes, but also on custom sizes.
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Medium Sizes
|
2-16 |
4-22 |
2-17 |
4-34 |
| NB |
16,000 |
22,000 |
17,000 |
34,000 |
| Buoyancy |
20,300 |
30,600 |
22,700 |
45,400 |
| Weight |
4,300 |
8,600 |
5,700 |
11,400 |
Our Medium sizes start at 16 Tons, achieved with simply two modules of 3 meters each, and can range up to 34 Tons of Net Buoyancy, using four modules of 3.2 meters each. These sizes are commonly used on pipeline deployment (also referred to as pipe-laying), and other sorts of installation support and even recovery operations. Their rotative core offers a degree of stability, even on harsher environments with waves and currents, which is one of the characteristics that makes them so desirable for use in the offshore industry, especially on the Oil & Gas environments during project construction and installation.
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Larger Sizes
|
2-23 |
4-46 |
| NB |
23,000 |
46,000 |
| Buoyancy |
29,700 |
59,400 |
| Weight |
6,700 |
13,400 |
These are our most commonly used Donut Buoys for offshore anchor handling operations. The simple version with two modules of 3.2 m in diameter starts providing 23 Tons of Net Buoyancy, with the complete Four Modules model providing up to 46 Tons of Net Buoyancy, fit for the heaviest applications in the Offshore Oil & Gas and Offshore Wind Industry. They are our largest standard size, but not the largest available, as we are capable of offering even larger sizes on request without any problem, simply let us know your project details and technical requirements.
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Key Applicationsof this type of donut buoy
Surface
These modular donut buoys are deployed at surface water level.
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Anchor Pendant
Donut Buoys are directly pendant to the main anchor chain.
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Modular
These are the unique and only modular type of anchor pendant buoy with rotating steel core on the market.
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Soft Skin
These use our newest buoyancy technology, the soft skin, that makes them durable even on harsher environments.
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Support
Donut buoys are a specialized type of heavy-duty support buoys.
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