At the final stage of the Mega-float project, the main body was dismantled into twelve small units. Each separated units restarted their new lives such as floating parking area, offshore recreation park and emergency storage against earthquake.

Mechanized underwater flame cutting system had adopted for dismantling operation of the Mega-float, because of its high quality and high efficiency. An edge cut by underwater flame cutting technique can be achieved for new welding joint without any additional surface treatment. This mechanized system cut over 1000m without any troubles.One machine cut about 60 meters a day. This length is about four times superior compared by manual oxy-arc cutting.