Njord EB (Ellipsoidal Buoyancy) & Njord SB (Spherical Buoyancy) provide long term, stable buoyancy to arrays of underwater equipment. With a full line of buoyancy solutions ranging from 100 meters to 6,000 meter water depths, these buoys are available in a range of sizes and shapes to ensure successful deployment and recovery during mooring expeditions.
With two geometries available, spherical or ellipsoidal, the buoys are low maintenance and extremely rugged to meet the harsh demands of both deepwater and coastal environments. Njord EBs are preferred for high current environments when low drag is necessary. Njord EBs and Njord SBs are fully able to integrate as a key component in mooring systems.
Manufactured from our proven high density poly-ethylene (HDPE) rotomolded shells, and filled with our in house microsphere and macrosphere fill system. Each subsea buoy is fully customizable for complete design freedom, to accommodate any size, uplift, structural components, or housing equipment needed within the float.
Benefits
100 to 6,000 meter depth rated
Spherical or low drag ellipsoidal geometries
Custom through holes
Low maintenance
Spherical or low drag ellipsoidal geometries
Custom through holes
Low maintenance
Application
Oceanographic mooring
Subsurface mooring
Acoustic Doppler Current Profiler (ADCP)
Fixed installation
Subsurface mooring
Acoustic Doppler Current Profiler (ADCP)
Fixed installation
Buoy Fill - Standard
Reference table to illustrate depth of application, diameter of the buoy and the uplift it provides.
Depth (m) | Diameter | Uplift (lbs) |
---|---|---|
300 |
16" Buoy, 1" hole
|
43
|
300 | 30" Buoy, 1" hole |
334 |
300 | 16" Buoy, 11" hole |
264 |
300 | 33" Buoy, 1" hole |
244 |
300 | 35" Buoy, 1" hole |
531 |
300 | 35" Buoy, 11"; 4" hole |
437 |
300 | 47" Buoy, 1" hole |
1,293 |
300 | 47" Buoy, 11" hole |
1,194 |
300 | 65" Buoy, 1" hole |
3,418 |
300 | 65" Buoy, 11" hole |
3,282 |
500 | 35" Buoy, 1" hole |
508 |
500 | 35" Buoy, 11"; 4" hole |
427 |
500 | 47" Buoy, 11" hole |
1,143 |
1,000 | 16" Buoy, 1" hole |
37 |
1,000 | 30" Buoy, 1" hole |
294 |
1,000 | 30" Buoy, 1", 3", 4" hole |
271 |
1,000 | 30" Buoy, 11" hole |
233 |
1,000 | 30" Buoy, 11"; 4" hole |
227 |
1,000 | 33" Buoy, 1" hole |
218 |
1,000 | 33" Buoy, 1", 2.5" hole |
184 |
1,000 | 33" Buoy, 10" hole |
186 |
1,000 | 33" Buoy, 10"; (2)-4" hole |
169 |
1,000 | 33" Buoy, 10"; (4)-6" hole |
144 |
1,000 | 33" Buoy, 10"; (2)-6" hole |
160 |
1,000 | 35" Buoy, 1" hole |
463 |
1,000 | 35" Buoy, 11" hole | 396 |
Depth (m) | Diameter | Uplift (lbs) |
---|---|---|
1,000 | 47" Buoy, 1" hole |
1,148 |
1,000 | 47" Buoy, 11" hole |
1,053 |
1,000 | 47" Buoy, 11"; 1.5" hole |
813 |
1,000 | 65" Buoy, 1" hole |
3,008 |
1,000 | 65" Buoy, 1"; 2"; 11" hole |
2,890 |
1,000 | 65" Buoy, 2" hole |
2,986 |
1,000 | 65" Buoy, 11" hole |
2,893 |
1,500 | 17" Buoy, 1" hole |
32 |
1,500 | 30" Buoy, 1" hole |
257 |
1,500 | 30" Buoy, 11" hole |
208 |
1,500 | 33" Buoy, 1" hole |
188 |
1,500 | 33" Buoy, 11" hole |
159 |
1,500 | 35" Buoy, 1" hole |
410 |
1,500 | 35" Buoy, 11" hole |
351 |
1,500 | 47" Buoy, 1" hole |
885 |
1,500 | 47" Buoy, 11" hole |
813 |
1,500 | 65" Buoy, 1" hole |
2,629 |
1,500 | 65" Buoy, 2" hole |
2,626 |
1,500 | 65" Buoy, 11" hole |
2,532 |
2,000 | 16" Buoy, 1" hole |
28 |
2,000 | 20" Buoy |
60 |
2,000 | 24" Buoy | 112 |
2,000 | 30" Buoy, 1" hole |
229 |
2,000 | 30" Buoy, 11" hole |
185 |
2,000 | 30" Buoy, 11"; 4" hole |
181 |
2,000 | 33" Buoy, 10" hole |
135 |
Depth (m) | Diameter | Uplift (lbs) |
---|---|---|
2,000 | 33" Buoy, 10"; 2"; 3" hole |
135 |
2,000 | 35" Buoy, 1" hole |
359 |
2,000 | 35" Buoy, 11" hole |
305 |
2,000 | 35" Buoy, 11"; 1.5" hole |
305 |
2,000 | 47" Buoy, 1" hole |
893 |
2,000 | 47" Buoy, 11" hole |
830 |
2,000 | 47" Buoy, 11"; 1.5" hole |
821 |
2,000 | 65" Buoy, 1" hole |
2,335 |
2,000 | 65" Buoy, 2" hole |
2,334 |
2,000 | 65" Buoy, 11" hole |
2,209 |
3,000 | 16" Buoy, 1" hole |
20 |
3,000 | 20" Buoy, 1" hole |
48 |
3,000 | 30" Buoy, 1" hole |
159 |
3,000 | 30" Buoy, 11" hole |
126 |
3,000 | 33" Buoy, 1" hole |
157 |
3,000 | 33" Buoy, 10" hole |
133 |
3,000 | 35" Buoy, 1" hole |
277 |
3,000 | 35" Buoy, 11" hole |
238 |
3,000 | 47" Buoy, 1" hole |
673 |
3,000 | 47" Buoy, 11" hole |
679 |
3,000 | 65" Buoy, 1" hole |
1,788 |
3,000 | 65" Buoy, 11" hole |
1,690 |
4,000 | 35" Buoy, 1" hole |
227 |
4,000 | 65" Buoy, 1" hole |
1,464 |
5,000 | 65" Buoy, 1" hole |
1,298 |
35" Buoy, 1" hole |
35" Buoy, 1" hole |
Buoy Fill - Carbon
Reference table to illustrate depth of application, diameter of the buoy and the uplift it provides.
Depth (m) | Diameter | Uplift (lbs) |
---|---|---|
300 |
16" Buoy, 1" hole |
45 |
300 | 30" Buoy, 1" hole |
348 |
300 | 30" Buoy, 11" hole |
278 |
300 | 33" Buoy, 1" hole |
254 |
300 | 33" Buoy, 10" hole |
203 |
300 | 35" Buoy, 1" hole |
553 |
300 | 35" Buoy, 11" hole |
465 |
300 | 47" Buoy, 1" hole |
1,349 |
300 | 47" Buoy, 11" hole |
1,244 |
300 | 65" Buoy, 1" hole |
3,565 |
300 | 65" Buoy, 11" hole |
3,421 |
1,000 | 16" Buoy, 1" hole |
40 |
1,000 | 30" Buoy, 1" hole |
313 |
1,000 | 30" Buoy, 11" hole |
252 |
1,000 | 33" Buoy, 1" hole |
232 |
1,000 | 33" Buoy, 10" hole |
197 |
1,000 | 35" Buoy, 1" hole |
493 |
1,000 | 35" Buoy, 11" hole |
421 |
1,000 | 47" Buoy, 1" hole |
1,222 |
Depth (m) | Diameter | Uplift (lbs) |
---|---|---|
1,000 |
47" Buoy, 11" hole |
1,130 |
1,000 | 65" Buoy, 1" hole |
3,205 |
1,000 | 65" Buoy, 11" hole |
3,079 |
1,500 | 16" Buoy, 1" hole |
37 |
1,500 | 30" Buoy, 1" hole |
291 |
1,500 | 30" Buoy, 11" hole |
234 |
1,500 | 33" Buoy, 1" hole |
213 |
1,500 | 33" Buoy, 1" hole |
179 |
1,500 | 35" Buoy, 1" hole |
463 |
1,500 | 35" Buoy, 11" hole |
396 |
1,500 | 47" Buoy, 1" hole |
1,015 |
1,500 | 47" Buoy, 11" hole |
931 |
1,500 | 65" Buoy, 1" hole |
2,973 |
1,500 | 65" Buoy, 11" hole |
2,859 |
2,000 | 16" Buoy, 1" hole |
35 |
2,000 | 30" Buoy, 1" hole |
281 |
2,000 | 30" Buoy, 11" hole |
227 |
2,000 | 33" Buoy, 1" hole |
206 |
2,000 | 33" Buoy, 10" hole |
174 |
Depth (m) | Diameter | Uplift (lbs) |
---|---|---|
2,000 |
35" Buoy, 1" hole |
442 |
2,000 | 35" Buoy, 11" hole |
378 |
2,000 | 47" Buoy, 1" hole |
1,098 |
2,000 | 47" Buoy, (2) 1" hole |
911 |
2,000 | 47" Buoy, 11" hole |
1,017 |
2,000 | 65" Buoy, 1" hole |
2,874 |
2,000 | 65" Buoy, 11" hole |
2,766 |
3,000 | 16" Buoy, 1" hole |
28 |
3,000 | 30" Buoy, 1" hole |
216 |
3,000 | 30" Buoy, 11" hole |
172 |
3,000 | 33" Buoy, 1" hole |
164 |
3,000 | 33" Buoy, 10" hole |
139 |
3,000 | 35" Buoy, 1" hole |
267 |
3,000 | 35" Buoy, 11" hole |
314 |
3,000 | 47" Buoy, 1" hole |
895 |
3,000 | 47" Buoy, 11" hole |
886 |
3,000 | 65" Buoy, 1" hole |
2,475 |
3,000 | 65" Buoy, 11" hole |
2,392 |