For Azusa Matsuura, the first woman to head the Japan Coast Guard School, one of the biggest obstacles in her career in the male-dominated service was her own self-doubt.

Matsuura assumed the post in April last year at the school in Maizuru, Kyoto Prefecture, which trains Japan Coast Guard officers. She rose through the ranks by overcoming challenges in an organization where about 90% of personnel are men.

¡°The glass ceiling was something I had created in my own mind,¡± says Matsuura, 59, reflecting on her career.