A company specializing in salvage, marine engineering, surveying, and special construction

Marine construction work is greatly affected by the natural environment, and in such special environments, high capabilities are always required. Based on the extensive experience we have cultivated in salvage work at sea, which requires special technical skills, and with the basic principle of in-house construction, we make effective use of more than 100 workboats and over 30 divers, as well as people, materials, machinery and ships, to carry out our work with all our might in order to meet our customers' requests.

We carry out many tasks, including preliminary surveys for port planning, surveys of the current state of marine ecosystems and the environment, and obstacle detection and maintenance surveys for structures related to construction. In particular, we have adopted multi-beam and side-scan echo sounders, which are marine 3D surveying systems that have become increasingly popular in recent years, to provide faster and clearer data for survey work and offshore construction. We have also achieved success with our unique technology, such as underwater core sampling of concrete by divers and simple surveys using light equipment, such as underwater jet boring.

Through cooperation between our professional diver team (available throughout Japan) and our correspondence team, we are able to provide speedy services that meet the needs of our customers.

While making use of their many years of diving experience, they update their information to keep up with the times, and are also working towards the SDGs through activities such as Biofouling UWI and hull cleaning before ports in New Zealand and Australia.

In water areas such as small rivers and canals, we have built and are using work boats that make it possible to carry out lifting and dredging work in narrow waterways and low spaces that were difficult to carry out with conventional work boats.We also make full use of our technical capabilities to handle special construction work such as dumping rubble in deep water (maximum recorded depth 160m) and driving in earth anchors on water.