alloyed (often with very small amounts of
zinc, iron, and indium) so they are more
negative on the galvanic scale than zinc
anodes and they, therefore, provide better corrosion protection.
In terms of longevity, an aluminum
anode lasts between 30 percent and 50
percent longer (depending on the manufacturer) than an anode made of zinc. A
magnesium anode will last only about
one third as long as a similar sized zinc
anode. In some markets the aluminum
anodes cost a bit more than those made
of the more traditional zinc material, but
because they last longer, overall cost is
about the same or even less.
The aluminum anodes now on the market are considered by many the
type of sacrificial anodes available for a
number of reasons:
1. They do a better job of protection than
the traditional zinc anodes.
are accepted by various sterndrive manufacturers as the best material to use.
3. They last longer.
4. They can be safely used in salt, fresh or
are environmentally friendlier
than the alternatives.
Aluminum sacrificial anodes
are readily available, but anodes made
of zinc continue to hold on to the market
because boaters, and many small service
yards, have simply not kept up with sacrificial anode technology. To them zinc
is a Another reason is the manufacturers of sacrificial anodes have not
properly informed the boating public of
changes in the technology. Most of them
make anodes of both aluminum and
zinc and they make as much selling one
as the other so they are not financially
motivated to spend money on advertising or marketing.
The largest manufacturer of
sacrificial anodes for pleasure vessels is
Canada Metal (Pacific) Ltd. Their anodes
are sold under the brand name.
They are based in Richmond, B.C.
Tyler Seebach, Canada Vice
President of marine sales, says more
boaters are becoming aware of the advantages of sacrificial anodes made of
aluminum. As a result the sale of pleasure boat sacrificial anodes made of aluminum has steadily increased 10 percent
a year over the past six years. Some local chancelleries report that they are now
selling primarily aluminum anodes and
some stock zinc anodes at all.
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Wire, rod and composite rigging, huge
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1629 Columbia St., North Vancouver, BC
At Entrance to Lynnwood Marina
For Over 50 Years
Stonehouse Restaurant Ope
The Canoe Cove Community:
All Things Marine Thrift Store 250-385-4222
Blackline Marine 250-656-6616
Canoe Cove Cafe 250-656-5557
Canoe Cove Manufacturing 250-656-3915
Canoe Cove Marina Boatyard 250-656-5566
Freedom Marine Yacht Sales 1-877-609-0985
Jespersen Boat Builders 250-656-2581
2300 Canoe Cove Road
North Saanich, BC Canada V8L 3X9
Lightship Mobile Marine 250-415-3408
Morgan Warren Studio 250-656-1081
Pacifica Paddle Sports 250-665-7411
Quadrant Marine Institute 250-656-2824
Raven Marine Services 250-655-3934
Reyse Marine 778-676-8590
Seapower Marine Repair 250-656-4341
Sidney Harbour Cruises 250-655-5211
Stonehouse Restaurant 778-351-1133
Total Boat Marine Surveyors 250-508-4418
Vector Yacht Services 250-656-5515
Watershed Canvas 250-885-9222
Full Service Marina Visitor Moorage Available Shower Laundry Facilities