How Robots are Fixing Damaged Subsea Cables

Underwater pipeline.

We have previously discussed the various ways subsea cables can be damaged underwater (Link:, but how are these cables fixed? The answer lies on a ship like the Pierre de Fermat, a ship specially designed for undersea cable repairs.  Once the break location is identified, the ship launches a remotely operated vehicle (ROV) to retrieve the cable and return it to the ship.

The repairing process of a cable isn’t the simplest process, as we’ve explained in our blog post “When it comes to subsea cable repair, time is of the essence”. As the cable is being repaired, cables and equipment are vulnerable to damage by other vessels and fishing gear.  It’s a delicate feat that requires speed and precise navigation in some of the most extreme ocean environments.  Because of this, subsea cable hardware should provide secure, fast assembly. Once the cable is repaired, the ROV returns to the sea floor and attaches the newly repaired piece of cable to the existing subsea cable network and uses high pressure water jets to bury the cable.

To read more about the fascinating process of repairing subsea cables, check out the article “This Giant Robot Fixes Undersea Broadband Cables“.

PMI’s proven, high quality subsea hardware is the ideal solution increase subsea cable performance, assist in cable reparation, and in ROV and ship attachments. Call us today to chat about how our solutions can help your subsea cable problems.

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