Bolt On Hull Anodes

Harbor Zinc Anodes meet military specification MIL-A-18001K, MIL-DTL-18001L and ASTM B 418 Type 1 alloy.  HARBALUM Aluminum Anodes conform to MIL-A-24779 alloy.

Zinc and aluminum anodes are generally used in salt and brackish waters where resistivity is generally lower. Typical uses are for the hulls of vessels, offshore pipelines, seawalls, pilings, production platforms, in marine heat exchangers, on boat propellers and rudders.

Aluminum anodes have several advantages, such as a lighter weight and  higher capacity than zinc. However, their electrochemical behavior is not considered as reliable as zinc in lower levels of brackish waters, and greater care must be taken in how they are used. Aluminum anodes may passivate where chloride concentration is low.

Anodes are necessary because galvanic corrosion occurs when metals of different potentials are electrically attached in marine environments. “Harbor” sacrificial anodes can be manufactured for a variety of  installation methods of bolt-on, weld-on or screw-on styles.  In addition to these, Harbor Anodes can be cast to custom-sized requirements. Please contact us for advice on optimizing an anode to suit your specific requirements

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ZINC PARTALUM PARTSTYLEDIMENSIONS (INCHES)CORE (INCHES)HOLE CENTERSZINC LBSALUM LBS
ZHC-42AHC-16bolt on2.5 x 6 x 12.25 x 1.5 x 86"4216
ZSC-24ASC-11bolt on1.25 x 3 x 24.25 x 1.5 x 1512"2411
ZHC-23AHC-10bolt on1.25 x 6 x 12.25 x 1.5 x 86"2310
ZSC-12ASC-5bolt on1.25 x 3 x 12.25 x 1.5 x 86"125
ZHN-20AHN-8solid plate1 x 6 x 12 - -208
ZHN-10AHN-4solid plate.5 x 6 x 12 - -104
ZHC-10AHC-42 slotts.625 x 6 x 12.5 x 3.75 slots2.25" - 8.7"104
Z-10-3 "T" slotts.625 x 6 x 12.5 x 2 slot2" - 7" OC slots10-
ZHC-5 -2 slotts.625 x 4 x 8.5 x 2.5 slotts2.25" - 6.25"5 -
ZHC-5R-2 slotts.625 x 4 x 9.5 x 2.5 slotts2.75" - 6.75"5-
ZSC-20ASC-83 holes2 x 3 x 17.5.18 x 1.25 x 133 holes, 5.37"208
ZSC-10ASC-43 holes1 x 3 x 14.18 x 1.25 x 133 holes, 5.37"104
R3-P3 -bar.25 x 2 x 36 -optional5 -
ZTB-5 -bolt on.75 x 4 x 8.188 x 1.254.37"5 -
ZTB-3 -bolt on.75 x 2.75 x 5.75.188 x 1.252.87"3 -
-AHC-33bolt on2.25 x 5 x 29.75no core1.87" dia, 13" oc-33

Zn: ZHC-42  Al: AHC-16

Hull Anodes Bolt On

Zn: ZSC-24   Al: ASC-11

Hull Anodes Bolt On

Zn: ZHC-23  Al: AHC-10

Hull Anodes Bolt On

Zn: ZSC-12   Al: ASC-5

Hull Anodes Bolt On

Zn: ZSC-20   Al: ASC-8

Hull Anodes Bolt On

Zn: ZSC-10   Al: ASC-4

Hull Anodes Bolt On

Zn: ZHN-20   Al: AHN-8

Hull Anodes Bolt On

Zn: ZHN-10   Al: AHN-4

Hull Anodes Bolt On

Zn: ZHC-10   Al: AHC-4

ZHC-10

Z-10

Z-10

 

ZHC-5

ZHC-5

ZHC-5R

ZHC-5R

ZTB-3

ZTB-3-01

ZTB-5

ZTB-5-01

R3-P3

R3P3

AHC-33

INGOT ANODE