Zinc anodes

The pitguard anode is specially designed for preventing pitting attack on tank bottoms. The anodes are clamped to the notch holes at the very bottom of the water ballast tanks or cargo tanks. 

Standard anode sizes are shown below. Other types or sizes can be custom-made upon request.


Data sheets

Technical data sheets for various sacrificial anodes alloys.
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Zinc versus aluminium anodes

Should you use zinc or aluminium anodes?
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Anode production

Most anodes from Cathwell are made by BAC, one of Europe's largest anode manufacturers.
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Anode type Weight (kg)
Dimensions (mm)
  Gross Net L H W
50-TP-2 5.5 4.7 400 36 54
ZTR-58P 5.8 5.3 410 45 46
ZTR-90P 9.0 8.2 640 45 46
105-TP-2 10.0 9.4  400 60  70 
ZTR-120P 12.0 11.0 820 45 46
140-TP-2 14.0 12.6 1235 40 40
ZTR-230P 23.0 21.7 1190 50 55