Green marine engineering: Stakeholder perspectives on sustainable ship design and operational innovationWinarno Winarno, Marudut Bernadtua Simanjuntak, Jaja Suparman, Vidya Selasdini, Markus Yando, Meilinasari Nurhasanah Hutagaol and Ronald SimanjuntakBIO Web Conf., 186 (2025) 03002DOI: https://doi.org/10.1051/bioconf/202518603002