Be notified of unknown underwater corrosion activity!    Protect your boat!        
Galvatest  detects electrolysis before it is too late...

  HOW?   Galvatest informs on the sensitivity to corrosion of all submerged metals: steel, stainless steel, aluminium, bronze, which are all concerned. The measurement of their "corrosion potential" gives instant information on the proper functioning of the anodes and the possible presence of destructive leakage currents*, wherever they come from. A leader in its field, Galvatest provides professionals and boaters with the means to effectively protect themselves against underwater corrosion and its desastrous consequences, both physical and financial.

 * They lead to under and over cathodic protection resulting in corrosion and paint blistering: When and how to proceed?

A multifaceted and complex phenomenon, the potential corrosion of the submerged metal parts of your boat, and more particularly of its propulsion system during prolonged downtime, is detected afloat by the significant modifications of their corrosion potential. Deviously accentuated by electrolysis, it is more than ever your n°1 enemy...

Galvatest Sensors

Galvatest sensors
Galvatest mini dipping sensors are Ag/AgCl reference electrodes allowing, when combined with a controller or a high impedance multimeter, accurate control of corrosion susceptibility for metal hulls and all propulsion systems. Their sintering manufacturing technology makes them particularly reliable.

Galvatest Controller

Galvatest controller
Galvatest leds controller is a mobile electronic device intended for boaters, which, combined with its Galvatest sensor, assesses at once, and as often as necessary, cathodic protection level of a metal hull or propulsion system and eventuality of stray currents, responsible for electrolysis.

Galvatest Kits

Galvatest kits
Galvatest kits are autonomous complete control systems intended for crews and nautical professionals. Their regular methodic use is recommended to maintain the good "health" of any boat by checking the efficiency of anodes and ensuring the harmlessness of any servicing work on the boat's electrical circuit.

Galvatest round the world with Energy Observer

Galvatest - Energy Observer
Galvatest ensures anti-corrosion control of metallic immersed equipments of Energy Observer, the first hydrogen powered boat round the world. A useful task if we consider the important quantity of energy and many electrical circuits available on board...

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Wood or polyester (GRP) hulls: mind the sail-drives!

propulsion systems of grp hulls are very corrosion sensitive

Did you know? Unlike metal hulls, boats made of wood or polyester (GRP) are particularly at risk: as their hulls do not carry electricity, metal propulsion devices are necessarily over-solicited... They represent the only way to the sea for unwanted leakage currents from aboard or ashore!

Steel or aluminium metal hulls: a well-known fact!

metal hull are corrosion sensitive

They are primarily concerned by electrolysis and the regular control of their corrosion potential. Such control is conducted in "real time" on all big ships and is an integral part of formal ABYC (American Yacht and Boat Council) recommendations for all recreational boats in aluminium. Be very careful with your hanging anodes : if they are made of magnesium at sea, they will be likely to destroy your immersed paint work... 

Electric propulsion: a true challenge!

electric propulsion is a new challenge

The gradual implementation of electric propulsion will pose new challenges for builders and yachtsmen. A formidable enemy of submerged metal equipments, electricity, now available on board in large quantities, requires best practices in terms of wiring, earthing management and control procedures...

Use of Galvatest is recommended by major

Regular control of metal hulls and immersed equipments corrosion potential is a recommended practice of international standards and major boat and equipment manufacturers. All our electrodes sensors are individually tested. Patented technology. Galvatest is a member of Normandie Maritime.


The original comic strip "How goes your boat?"

To understand quickly and without painful headache, download our explanatory comic strip. You will learn, with just a few pictures, how to use Galvatest to assess instantly cathodic protection level given by anodes, and if harmful stray currents are eating your boat.

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The White Paper about cathodic protection...

White Paper galvatest cathodic protection

With White Paper about cathodic protection published by Galvatest, you will learn all you ought (or wish) to know about galvanic and electrolytic corrosion phenomenons affecting small recreational or working boats.

 Download this document

What certification bodies say...