"MIRAI" is engaged in wide and high accuracy marine meteorological observation for analyzing of global climate change by the latest observation equipment.

"Ryofu Maru" undertakes on oceano-physical chemical and biological observations as well as oceanographic observation. for physical, chemical, biological oceanography and monitoring of climate change.

"Hiroshima Maru" is engaged in nautical training and education for students as well as various researches and experiments to develop ship's navigation technology.