The Scotland-Northern Ireland 4 submarine cable is a fiber-optic cable system that connects the two regions. It is owned by Aqua Comms Limited and was completed in 2018. The cable system spans a distance of approximately 340km, and has a capacity of 60 terabits per second. The cable system provides a reliable and secure communication link between the two regions, and is an important component of the global telecommunications infrastructure. The Scotland-Northern Ireland 4 submarine cable has been designed to withstand extreme weather conditions and is equipped with the latest technology to ensure high-speed and reliable data transmission.