Electrolysis is a permanent threat for your boat... Don't wait for the first damages!
Galvatest  detects electrolysis before it is too late...

  ABSTRACT   All metals used in shipbuilding tend to corrode when immersed: steel, aluminum, bronze and even stainless steel. In fact, you have been, you are, you will be affected by this problem. There is a reliable marker to determine, afloat, the sensitivity to corrosion of any metal: it is the instant value of its electro-chemical potential, which must always remains in its protective values. Galvatest provides you with a proven technology to accurately measure this potential and control the efficiency of the anodes and the presence of harmful leakage currents* from onboard or ashore, responsible for a destructive electrolysis. By providing the necessary methods, practices and tools, Galvatest allows boaters and professionals to guard against corrosion. More information in the following pages…

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

Galvatest Sensors

Galvatest sensors
from 162 €
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, 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, real foes of your boat.

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...

Follow on www.energy-observer.org

Steel or aluminium metal hulls

metal hull are corrosion sensitive

Metal hulls made of steel or aluminium 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. 

Wood or polyester (GRP) hulls

propulsion systems of grp hulls are very corrosion sensitive

Unlike metal hulls, wood or polyester hulls (GRP) do not carry electricity. Thus, propulsion systems, particularly S- or Z-drives, are very concerned by Galvatest control. Their carters are made of very conductive aluminium which stands as a primary route for on board or ashore stray currents seaking to travel through the sea...

They did not die all, but all were struck!

all were struck

40 mAh received during 30 days will definitely destroy 10 g of aluminium... And because it is a natural phenomenon, your boat did have, have or will have corrosion problems! Don't wait, act now! Consequences of corrosion – often costly – are never covered by insurance companies. Have a look at simulated consequences of a 1 Ah current leak received through an aluminium sail-drive during 100 days, page Demo & Cases.

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.

 Download this document

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...