Subsea & Underwater Equipment

Underwater duty changes which part of a cable fails. Water ingress travels along the conductor rather than through the jacket, pressure drives it past a damaged sheath, and the cable is expected to hold its electrical properties through years of immersion and movement. Suoqi builds subsea cable around tinned copper conductors, hydrolysis-stable insulation, pressure-tolerant construction and a double-layer sheath, and we agree the termination with the cable so the rating holds at the ends.

What usually governs cable life here

The requirement that decides how long the cable lasts in this installation — and therefore what we change in the construction.

• Conductor protection against chloride attack — tinned copper, not plain
• Permanent immersion rating (IP68) including at the termination
• Hydrolysis-resistant insulation and sheath compounds
• Hydrostatic pressure tolerance at the working depth

How to specify