Company profile

Let us tell you about KOJIMAGUMI.


Scoop the mud from the bottom of the water to make land.
Humans have been doing so not only in Japan but in many countries since the dawn of history. We hear the story of creation, "the land created with the mud from the bottom of the water," not only in Japan but in other countries as well. People created land from shapeless mud, built houses, paved roads, opened markets, nurtured culture, and generated civilization. It is not an exaggeration to say that civil engineering starts with "dredging" that scoops mud.

Port is where trading with countries around the world to sustain our lives takes place. It has a characteristic nature to get filled with sediment flowing from rivers over time. Accumulated sediment in rivers blocks the flow of water, causing floods. Dredging moves sediment allowing the port to function. And it restores the smooth flow of rivers. Sediment can utilize to create land elsewhere.

Kojimagumi has been engaging in the various port civil engineering business, including dredging in the dynamic natural cycle, since its establishment in 1919. We have participated in construction works in and out of Japan with our many dredgers as the world's largest grab dredger, GOSHO. We also have operated many of our unloader vessels, creating new land utilizing dredged material. We are proud to provide a backbone to society maintaining port activities and protecting people's lives from disasters through business.

Severe climate change. Infectious disease crisis as the novel coronavirus. People are looking for a new way of living, cities, and societies that accommodate various changes now. Also, in ports and rivers, we need a new civil engineering work that enables people a continuous secure life.

Kojimagumi will contribute to creating a new society of continuous secure life, developing advanced civil engineering technology, work vessels, and construction machinery utilizing digital technology actively, reaffirming the fundamental meaning of civil engineering of "creating a society."

President, Representative Director
Tomonori Kojima