Flexible elastomer wrap panels stretched and clamped encircling submerged pilings, risers and pipelines are coated to resist degradation by any form of marine life, and incorporate an interior pile-facing felt layer impregnated with a corrosion inhibiting and biocidal gel, providing long term protection...http://www.google.fr/patents/US6019549?utm_source=gb-gplus-shareBrevet US6019549 - Vortex shedding strake wraps for submerged pilings and pipes
Vortex shedding strake wraps for submerged pilings and pipes
