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There are three main materials used as galvanic
Ned Marine Cathodic Protection
Ned Marine Services BV has over 10 years of experience
in providing comprehensive Cathodic Protection (CP)
and Marine Growth Prevention Systems (MGPS) to
the Marine, Offshore Oil & Gas, Offshore Wind Farms
and Civil Industries.
Ever since its inception in 2010 Ned Marine Services B.V.
has built a reputation for high quality products and
services. The company has prided itself on this
reputation, prioritizing customer satisfaction in every
business decision it has made since.
This led to the decision in 2015 to split the company in
multiple branches focusing exclusively on their respective
core products. This allows for better service/quality through
specialization. Continuing with the same dedication to
quality and service as before, without the distractions of
other core products. It has allowed growth in all aspects. Cathodic protection design.
NEDM2670 - 3luik Anodes[2].indd 2 18-03-21
Our markets
We have established an excellent reputation in
supplying and maintaining various industries:
• Offshore oil and gas
• Offshore wind
• Process industry and energy
• Shipping
• Shipbuilding and repair
• Super yachts and leisure yacht
• Civil engineering and infrastructure
Our services
• Anode calculation and arrangement drawings
• Anode inspection
• Anode delivery
All of our cathodic protection anodes comply with the
recommended practice of DNVGL-RP-B401 for
Cathodic protection solutions
Anti-fouling anodes
Anti-fouling is the process of eliminating obstructive
organisms from essential components of seawater
systems. Marine organisms grow and attach to the
surfaces of the outboard suction inlets used to obtain
water for cooling systems. These anodes typically
consist of copper and aluminium (or iron).
We provide Anti-fouling spare electrodes (Copper-
Aluminium, Copper-Iron) as per your requirements
for any kind of Impressed Current Anti-fouling
System you may have on board.
Our fl exible production line ensures very cost
effi cient rates in addition to our quality control
system that guarantees reliable operation of spare
anti-fouling electrodes.
Anti-fouling anodes Anti-fouling anodes
anodes:
Aluminium anodes
The chemical composition of aluminium anodes is
based in the well established Al-Zn-In and it is suitable
for most sea water applications. Their electrochemical
capacity is more than 3 times greater than the capacity
of zinc and it is nowadays the most widely used alloy
for the cathodic protection of ships and other marine
metallic structures.
Our pre-casting quality secures the concentration of
all important elements (either impurities or allying
elements), even in very low concentrations, in order to Calculation
strictly conform with the specifi cation.
Magnesium anodes
The magnesium anode generally works well in brackish
and fresh water. Magnesium contains a lower
transition resistance and is therefore better suited in
fresh and brackish water than zinc anodes.
Sacrificial Anodes Anode calculation
Zinc anodes
Sacrifi cial anodes are easily corroded materials Corrosion protection is obtained by proper anode
The Zinc alloy type is the well-established formulation
deliberately installed in a pipe or tank to be sacrifi ced distribution and location. Therefore, on request, we
based on US MIL – A – 18001K specification. It is suitable
to corrosion, leaving the rest of the system relatively can provide anode calculations and preparation of
for general seawater applications. Its low electrochemical
corrosion free. anode arrangement drawings.
capacity makes it suitable for coated structures were the
This application relies on a solid electrical connection
current demand is significantly reduced.
between the anode and the item to be protected by
effectively stoping the oxidation reactions on the metal
Advantages of using sacrifi cial anodes:
of the structure that is to be protected.
• Can be used where there is no power
There are three main metals used as galvanic anodes:
• Lower initial cost
magnesium, aluminium and zinc. Each has a unique
• Less supervision required
application that is advantageous to its unique
• Comparatively simple installation and additional
potentials.
anodes can easily be added if the initial
installation proves to be inadequate
The anodes in sacrifi cial anode cathodic protection
systems must be periodically inspected and replaced
when consumed.
Sacrifi cial Anodes Sacrifi cial Anodes - Aluminium Sacrifi cial Anodes - Magnesium Sacrifi cial Anodes - Zinc
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