Ship’s hulls are very much prone to corrosion of an aggressive nature in the form of pitting corrosion unless they are applied with cathodic protection.
Coatings are the first barriers to protect vessels hulls against corrosion.
Hull anodes are used to compliment coated arrears of submerged structures or also to reduce the corrosion rate of a submerged bare metal area such as the propeller of a ship.
Alloys of high purity Zinc or Aluminum with the necessary trace elements to produce correct performance are used for the manufacturing of Sacrificial anodes.
Hull anodes are usually welded direct to the ship structure , but can be bolted if required.


Tank  anodes  are  recommended  for  the  protection of  ballast  tanks  in  bulk  carriers, cargo  vessels  and  bottom  protection  in  tankers.
Unpainted tanks require a large amount of well distributed anodes. Combining anodes with coatings the amount of anodes can be reduced.

The design of system will be based upon:

STRAIGHT CORE  ARRANGEMENT

Anodes contain  a straight steel core rod for clamping /  bolting to a ballast tank structure with ¨U” bolts or clamps. In this case they can be fitted without  the need to gas-free for hot-work.

PITGUARD  ANODES

Frequently the bottom area of a tank immersed in a few centimeters of ballast water.This can lead to pitting and repair the coating is very difficult.The problem can be solved by bolting on Pitguard Anodes. Pitguard are provided with an integral clamp for ease of attachment to the scallop holes in the bottom longitudinal and can be fitted during voyage.