Outstanding technology, solid track record, and cutting-edge facilities.
Supporting submarine cables that connect to Japan’s future.

Submarine cable operations are not only about new laying and burying. They also include investigation and repair of damages caused by aging or natural disasters and removal. SEKIKAIJI Industry undertakes protective construction to extend the lifespan. We own the state-of-the-art cable-laying barges “Awaji” and “Asahi,” which serve as mother ships for various submarine operations. Both barges are equipped with the Dynamic Positioning System (DPS) for stationary positioning, which automatically controls the barges by calculating GPS positioning information and external factors (currents, waves, and wind). They maintain accurate barge position and stillness, laying cables along the computer input route. Without the need for repeated anchor deployment and retrieval or movement, we achieve safer, faster, and more efficient work, even in deep waters or busy maritime areas like the Akashi Strait or Tokyo Bay.

We have introduced remotely operated vehicles (ROVs) for diving operations that previously relied heavily on divers. With the development and evolution of sensor technology, we have achieved both safety and accuracy in deep-sea operations and significantly reduced costs. However, no matter how much we advance in technology, the key to our operations remains the workforce, the human element. To respond promptly to changes in weather and sea conditions, as well as unforeseen situations, we continuously provide training and drills to enhance each individual’s abilities and skills, working day and night to strengthen our teamwork.