Otter-board anodes are commonly used on fishing trawlers and other commercial fishing boats. They are also sometimes called 'bolt anodes' or 'condenser-style anodes'. They are installed on the angled boards (known as otter boards or doors) which hold the sides of a trawl net open as the boat pulls the net through the ocean.
The ZD-3 anode is manufactured from 99.9% pure high-grade zinc alloy, and conforms to Australian Standard AS2239 and U.S Military spec's.
It features a 3/8" coarse UNC threaded bolt.
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