Cathodic protection
For docks, piers and jetty structures
Corrosion prevention for docks and other marine facilities always presents unique challenges.
Deepwater has provided cathodic protection for every type of dock and jetty structure. Whether designing an anode system for a new construction project or retrofitting the anodes on an old harbor, our team understands that every asset is different, both structurally and in terms of its particular corrosive environment. To accommodate all of the variables involved with a marine cathodic protection system (water depth, tide, temperature, salinity, etc.) one must design with multiple solutions in mind. At Deepwater, our NACE - certified corrosion experts apply a suite of different proprietary products, each designed to suit a particular environment. All of Deepwater's system components are designed and manufactured in-house. By utilizing the full range of products and methods developed during our long history, our team can quickly and reliably address the various challenges involved in protecting these types of assets.
For new construction projects, which require traditional sacrificial anode systems, we provide stock pier and piling anodes, made at ISO 9000 certified foundry facilities. Associated foundries are located minutes from the individual project managers and system designers, allowing our team to monitor quality effectively and keep project deliveries on schedule.
For anode replacement designs, For anode replacement designs, the correct combination of factors will determine the solutions for each dock structure. The availability of power, water depth, layout, vessel traffic, weather and many other factors can cause a cathodic protection system to fail. Retrofitting new anodes onto an existing dock adds an additional layer of logistical hurdles for the cathodic protection designer to overcome. Over the last 25 years, Deepwater's engineers and cathodic protection specialists have developed the products we manufacture in direct response to these challenges, and as a direct result our experience in applied cathodic protection for marine environments is way ahead of the field.
Related technical papers
Offshore Cathodic Protection 101
A brief tutorial about the science of cathodic protection as it relates to the offshore oil & gas industry, complete with diagrams, chemical equations, etc.
Technical Bulletin: Dock Cathodic Protection Retrofits
A case study of three dock / jetty retrofit projects conducted by Deepwater, highlighting the versatility of Deepwater's three main systems for protecting docks and jetties: RetroBuoy Jr., RetroLink, and the Raparound Pile Anode.
Technical Bulletin: Raparound Survives the Winter
Installed in Cook Inlet, Alaska and having survived two straight arctic winters, the Raparound is quickly establishing itself as the only reliable harsh-environment pile-anode system.
Cathodic protection products for docks
Pier and piling anodes
For new cathodic protection, Deepwater provides aluminum pier and piling anodes, manufactured at ISO 9000 foundry facilities. Though standard sacrificial anodes are not practical for the majority of retrofit situations, they remain the best choice for most new construction projects.
RetroBuoy Jr.™
For jetty structures with power, RetroBuoy Jr. has up to 3 impressed current anodes in its single float that produce ~ 150 A of current. It is an efficient solution for jetty structures with a power source nearby. One well-placed RetroBuoy Jr. can protect ~ 30,000 ft2 of steel.
RetroLink™
For fast, short-term protection, the RetroLink system is a string of anodes installed topside, and hung to the sea floor. For a design of five years or less on a harbor or jetty in less than 85 ft. of water, the RetroLink system delivers affordable and effective protection.
Raparound Anode™
For piles in harsh conditions, the Raparound anode system is a rugged, impressed-current pile-anode built to withstand freezing waters and strong currents. Designed for use in Alaska, the Raparound provides ~ 100 A of cathodic protection for piles 12” to 48” in diameter.
VSE Anode™
When anodes must be buried, in extremely shallow water or in areas that vessel traffic may be a problem, the VSE Anode (Vaulted Seawater Envelope) is designed to operate from below the mud line. The unit's rugged design lasts 20 years, requiring only minimal power onshore.