启航者 (iSailing) is a free mobile navigation application developed by Southern Navigation Service Center, under the Ministry of Transport of China. This official and non-profit app is designed to assist ship navigation, providing a comprehensive range of services. With adherence to international e-navigation architecture and standards, it offers internationally recognized data quality and official support.

The app integrates various maritime information, offering intelligent route planning, navigation rules guidance, safety information, hydrological and meteorological data, and vessel reports. It aims to provide high-quality, efficient, and comprehensive navigation services to maritime users within its jurisdiction.

The platform for this app is iPhone, making it easily accessible to iPhone users seeking reliable navigation assistance. With its official and authoritative data, 启航者 is a valuable tool for ship navigation and safety.