MONTHLY MAINTENANCE
Halos in bottom paint around underwater hardware is a phenomenon I encounter on a regular basis. And just as often, I'm asked: "What causes this? Is it something to worry about?" The answers lie in an understanding of underwater metals and bonding systems.
Most fiberglass sailing vessels rely on metal alloys for through-hull fittings, struts, rudder gudgeons, hinges and so forth. In most cases, these metals are connected by wires (part of the vessel's bonding system) to a sacrificial anode or anodes, which provide what is commonly referred to as cathodic protection.
From a corrosion perspective, the anode-often called a "zinc," even though it can be zinc, aluminum or magnesium-is less noble, and thus more prone to corrosion, than the metals to which it is connected. As a result, the anode corrodes, or sacrifices itself, in order to protect the other metals.
この記事は Cruising World の October 2022 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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この記事は Cruising World の October 2022 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
すでに購読者です? サインイン
Off Watch
A1A is not only my favorite Jimmy Buffett album, but it's one of my favorite records ever. If I were marooned on an island and could bring only five CDs with me, this would be one of them
PREPARING A VESSEL FOR SURVEY
Trying to hide a boat's problems never ends well for the seller. Follow these tips to have a successful day
THE WESTERN WAY
Instead of buying a pricey custom canvas awning for my schooner, I made my own \"covered wagon.\"
HIDDEN GEM
BUT ALL AROUND IS A PARADISE FOR SAILORS WHO LOVE TO LINGER AND EXPLORE
Last Man Standing
During the past four decades, the once-thriving business of American production sailboat manufacturing has nearly vanished, and dozens of companies and builders have fallen by the wayside. And then there's Tartan Yachts of northeast Ohio, which, in some aspects, is as vibrant as ever. Longtime Tartan stalwart Tim Jackett, a marine-industry lion in winter still making a stand, might be the central reason why
Boat of the Year 2024
With sweet, early autumn sailing conditions on Chesapeake Bay, a strong fleet of 19 contenders competed for top honors in our annual Boat of the Year competition. Once the spray had settled and the votes were tallied, the judges awarded prizes in seven categories for monohulls and multihulls. The overall winner? The surprising, innovative Jeanneau Yachts 55.
On Watch
Sometimes, a seamanship or safety issue requires sailors to give up and turn around. But other times, it's just fear taking control of a situation that can be handled
Sailor & Galley
This rich, steaming stew from the Pacific Northwest warms chilled sailors' bones and brings back a lifetime of memories.
Seamanship
George Eldridge first published the Eldridge Tide and Pilot Book in 75. Its new edition, published by the sixth generation of his family, is an impressive feat of continuity
Island Time
It's impossible to rank these favorite destinations by beauty. Instead, sailors should set a waypoint based on what they want to experience
