Njord NB (Nano Buoys) are off-the-shelf subsea modular buoys, designed to provide moderate subsea uplift. Suitable for subsea equipment installation, each buoy core varies in density to suit individual project water depth requirements. By simply adding or removing individual units from the nested flotation stack, uplift can easily be adjusted.
Njord NBs are engineered to offer a durable, short lead time option to complete our range of subsea buoyancy solutions.
The unique nesting design of the individual buoyancy elements enables them to quickly assemble into a rigid structure with a specific uplift. The assemblies are held together and handled by using soft slings. The slings have numerous benefits including corrosion resistance, ease of handling, and no loss of buoyancy when compared to metal hardware. These soft slings are available for all assemblies to quickly and easily secure a nested buoyancy structure together for deployment.
Nesting design
Easy to use slings
Durable rotomolded shells
Long life
Pipeline sleds
Jumpers
Suspended moorings
Offshore installations
Nano Buoy Mid Element
| Depth rating (m) | Standard buoyancy, lbs(±5%) | Estimated part density (lb/ft3) | Trelleborg part # |
|---|---|---|---|
|
1,000 |
96 |
30 |
1104497 |
| 1,500 | 95 | 31 | 1104498 |
| 2,000 | 89 | 33 | 1104499 |
| 2,500 | 80 | 36 | 1104500 |
| 3,000 | 73 | 38 | 1057886 |
| 4,000 | 58 | 43 | 1104501 |
Nano Buoy End Element
| Depth rating (m) | Standard buoyancy, lbs(±5%) | Estimated part density (lb/ft3) | Trelleborg part # |
|---|---|---|---|
|
1,000 |
87 |
30 |
1104492 |
| 1,500 | 85 | 31 | 1104493 |
| 2,000 | 50 | 33 | 1104494 |
| 2,500 | 73 | 36 | 1104495 |
| 3,000 | 68 | 38 | 1057875 |
| 4,000 | 55 | 43 | 1104496 |
Nano Buoy Sling
| # of elements | Sling length | Trelleborg part# |
|---|---|---|
|
2 end elements |
6 feet |
1057877 |
| 2 end elements & 1 mid element |
8 feet | 1057878 |
| 2 end elements & 2 mid elements | 10 feet | 1057879 |
| 2 end elements & 3 mid elements |
12 feet | 1057880 |
| 2 end elements & 4 mid elements |
14 feet | 1057881 |
| 2 end elements & 5 mid elements |
16 feet | 1057882 |
| 2 end elements & 6 mid elements | 18 feet | 1105690 |
| 2 end elements & 7 mid elements | 20 feet | 1105691 |
