Where does this come from, and can I check it?

A cable ship must find the fault, hook the damaged section from the seabed and splice in fresh fibre on deck. The figure is taken from International Cable Protection Committee, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a technology fact?

Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Repairing a broken undersea cable takes weeks

A cable ship must find the fault, hook the damaged section from the seabed and splice in fresh fibre on deck Engineers locate breaks by sending light pulses down the fibre and timing the reflection, a technique called optical time domain reflectometry. A repair ship then drags a grapnel across the seabed to catch the cable, cuts one side and raises it for splicing in a clean room on deck. Faults are cut by anchors, fishing gear and undersea landslides, and a deep water repair can take a month. It sits in Mondo's technology collection, one of 200 facts that each trace back to the reference below.

Where this comes from

International Cable Protection Committee

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: cables, repair, engineering

Repairing a broken undersea cable takes weeks: the short answers

Where does this come from, and can I check it?: A cable ship must find the fault, hook the damaged section from the seabed and splice in fresh fibre on deck. The figure is taken from International Cable Protection Committee, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.