Subsea or submarine cables are fiber optic cables that connect countries across the world via cables laid on the ocean floor. These cables – often thousands of miles in length – are able to transmit huge amounts of data rapidly from one point to another. According to a 2019 report by StableSeas, commercial undersea cables transmit 97% of this internet and telecommunications data. With such heavy reliance on the technology, there’s no denying that submarine cabling is supporting the global economy, and an outage could have catastrophic consequences, which makes proper testing of submarine networks critical.

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