The straits silt up at the rate of about 15 centimetres per annum, and dredging has made it possible to build the Kitakyushu Airport at low cost.

Western maps from the 19th century also refer to this waterway as the Straits of Van der Capellen.

The Kanmon Straits Summer Fireworks Festival is held in August every year.

[citation needed] In October 2005, one of the world's largest airships currently flying (a Zeppelin NT imported from Germany) also passed through Moji on an all-Japan tour.

By far the most used method is a number of Kanmon Tunnels which carry the Sanyō Shinkansen, trains, cars, and even one for pedestrians at the narrowest point.