Anode Replacement — Protecting Your Vessel Below the Surface
Certified commercial divers providing professional underwater anode replacement and corrosion protection across Scandinavia and Worldwide -Strength beneath the surface. Protection that lasts.
Professional Anode Replacement Services Wordwide
At Delta Marine Scandinavia AB, we specialize in underwater anode and ICCP replacement for all types of vessels — cargo ships, tankers, passenger vessels, and offshore platforms.
Our certified commercial divers replace zinc, aluminum, and magnesium anodes and ICCP
Impressed Current Cathodic Protection reference cells and anodes directly underwater, eliminating the need for dry-docking and minimizing operational downtime.
Anodes play a crucial role in a vessel’s cathodic protection system, shielding the hull and other metal parts from galvanic corrosion. Over time, these anodes dissolve as they protect your vessel. If they are not replaced on time, the hull and propeller become exposed to corrosive seawater, leading to expensive repairs or reduced vessel lifespan.
We use only class-approved anodes and mounting systems, ensuring each installation meets the highest standards set by DNV, ABS, Lloyd’s Register, and Bureau Veritas. Every replacement is performed with precision, safety, and documentation.
Why Regular Anode Replacement Matters
Underwater corrosion doesn’t happen overnight — it builds up quietly, weakening key structures below the waterline. Regular anode replacement prevents this by continuously protecting the metal surfaces most at risk.
The benefits of timely replacement include:
- Prolonged hull integrity and reduced corrosion damage
- Lower dry-docking frequency and maintenance costs
- Full compliance with class and insurance inspection standards
- Better coating life and reduced pitting on metal surfaces
- Peace of mind knowing your vessel operates safely and efficiently
A worn-out anode is like an expired insurance policy — once it’s gone, your vessel is unprotected.
Our Underwater Anode Replacement Process
We approach every anode replacement project with precision and care:
- Inspection: Divers assess existing anodes, noting remaining mass, damage, and electrical continuity.
- Preparation: Surfaces are cleaned to ensure solid contact for new anodes.
- Removal: Old or wasted anodes are safely detached without damaging nearby coating or welds.
- Installation: New anodes are fitted using certified mechanical fasteners or wet welding.
- Testing: Electrical continuity and polarity are tested to confirm full protection.
- Reporting: Detailed reports with serial numbers, material data, and photographic evidence are delivered to the client.
Each step ensures compliance with class requirements while keeping your vessel fully operational.
Environmental Standards & Sustainability
At Delta Marine Scandinavia AB , environmental responsibility is at the core of our underwater operations.
We follow strict procedures to minimize marine contamination during anode replacement and adhere to IMO and HELCOM environmental regulations.
- We use eco-certified zinc and aluminum alloys that meet ISO 16222 standards.
- All removed anodes are collected and recycled in accordance with environmental waste guidelines.
- Our divers use biodegradable lubricants and anti-corrosion compounds that are safe for marine ecosystems.
Choosing Delta Marine Scandinavia AB means protecting not just your vessel — but also the sea it sails on.
Anode Replacement for Offshore and Industrial Structures
Our expertise extends beyond ships. We provide anode replacement services for:
- Offshore wind farms
- Oil and gas platforms
- Port structures and quay walls
- Underwater pipelines and subsea frames
In these environments, corrosion protection is critical for safety and long-term reliability. We design and install anode systems tailored to the structure’s material and exposure level, ensuring maximum efficiency of cathodic protection.
This versatility allows Delta Marine Scandinavia AB to serve not just shipowners — but also energy, infrastructure, and marine construction clients in all Scandinavia and worldwide.
Service Area
- 10+ years of diving experience in corrosion protection and underwater engineering
- Certified commercial divers with full offshore qualifications
- Compliance with DNV, ABS, LR, and BV standards
- Digital documentation with before/after images
- Fast response and mobile dive units in Europe and Worldwide
- Competitive pricing and long-term maintenance contracts
We don’t just replace anodes — we extend the lifespan of everything they protect.
FAQ
Generally every 12–24 months, depending on water type, vessel operation, and anode alloy.
Yes. Our divers perform full underwater anode replacement while the vessel remains afloat, saving both time and money.
We install zinc, aluminum, or magnesium anodes, selected according to salinity and environment.
Absolutely. Each project includes photographic documentation, material certificates, and installation records for class review.
We provide underwater diving services across Sweden, Norway, Denmark, Finland, and the Baltic Sea region. Our mobile dive teams are based in Gothenburg and can be deployed rapidly to ports including Malmö, Stockholm, and Copenhagen.
Visible pitting on hull metal, rapid anode wastage, or rust stains near fittings are indicators it’s time for an inspection.
Accordion Content
Contact Our Dive Team
Need professional anode replacement underwater or a full corrosion inspection?
Our team is ready to respond — day or night — anywhere in the Scandinavia and Worldwide.
Contact Delta Marine Scandinavia AB Today.