At VIV Solutions®, we design and build each helical strake for maximum performance in the field. Our engineers will work with you to determine the best geometric profile, manufacturing materials, and fastening mechanisms required for your application. Variables such as fin height, strake pitch, etc., all can be optimized prior to production.
We provide custom products to solve unique challenges such as improving cathodic protection, improving heat transfer, or accommodating riser shrinkage at depth due to hydrostatic pressure.
Our strakes are lightweight and durable, proven in even the toughest of offshore environments. Choose from regular, anti-fouling, or abrasion resistant strakes depending upon your technical requirements.
Technical Specifications
Helical Strakes
for Subsea Applications
- Triple start helix
- Fin height = 0.15-0.25D
- Pitch = 12-18D
- Cd ~ 1.3-1.8
- Efficiency ≥ 95%
Helical Strakes for
Wind Applications
- Triple start helix
- Fin height = 0.03-0.12D
- Pitch = 3-6D
- Cd ~ 1.0-1.3
- Efficiency ≥ 90%
D = outer shell diameter