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A galvanic anode, or sacrificial anode, is the main component of a galvanic cathodic protection system used to protect buried or submerged metal structures from corrosion. They are made from a metal alloy with a more "active" voltage (more negative reduction potential / more positive oxidation potential ) than the metal of the structure.
A transatlantic telecommunications cable is a submarine communications cable connecting one side of the Atlantic Ocean to the other. In the 19th and early 20th centuries, each cable was a single wire. After mid-century, coaxial cable came into use, with amplifiers. Late in the 20th century, all cables installed use optical fiber as well as ...
Submarine communications cable. A cross section of the shore-end of a modern submarine communications cable. 1 – Polyethylene. 2 – Mylar tape. 3 – Stranded steel wires. 4 – Aluminium water barrier. 5 – Polycarbonate. 6 – Copper or aluminium tube. 7 – Petroleum jelly.
Zinc sacrificial anode (rounded object) screwed to the underside of the hull of a small boat. Cathodic protection (CP; / kæˈθɒdɪk / ⓘ) is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell. [1] A simple method of protection connects the metal to be protected to a more easily ...
A submarine power cable is a transmission cable for carrying electric power below the surface of the water. [1] These are called "submarine" because they usually carry electric power beneath salt water (arms of the ocean , seas , straits , etc.) but it is also possible to use submarine power cables beneath fresh water (large lakes and rivers ).
Apollo is an optical submarine communications cable system crossing the Atlantic Ocean, owned by Vodafone. [2] It consists of 2 segments North and South, creating two fully diverse transatlantic paths. In early 2006, Level 3 Communications announced its purchase of 300 Gbit/s of capacity between Apollo North and Apollo South with an option to ...
Viking Link is a 1,400 MW HVDC submarine power cable between the United Kingdom and Denmark, which was completed in 2023. As of 2024, it is the longest land and subsea HVDC interconnector in the world. [1] The project is a cooperation between British National Grid and Danish Energinet. [2]
Dunant (submarine communications cable) Dunant is a private 250 Tbit/s 6,600 kilometre transatlantic communications cable that connects the United States (Virginia Beach) with France (Saint-Hilaire-de-Riez). Named for Henry Dunant, it was announced by Google in 2018 and went live in 2020. [1][2]