This video, titled "Launch Ceremony　進水式　三井造船　玉野事業所　20170712 Mitsui shipbuilding japan," was released by "caba phantom."

This video shows the launch ceremony held at Mitsui's Tamano Plant.
The launch ceremony is the first time a new ship assembled on the shipyard comes into contact with the water, and the naming ceremony for the ship is held at the same time.
Even if the ship is a mass-produced model, you can feel the respect and pride that Japanese people have for their work.

This video shows the launch ceremony that took place at Tamano Works, so be sure to check it out if you're interested!