Yun Lee Marine Group Holdings Limited, an investment holding company, provides maritime services in Hong Kong. It operates through Vessel Chartering and Related Services, Ship Management Services, and Marine Construction Services segments. The company offers time charter services with tugboats, ferries, and other vessels comprising non-self-propelled barges and workboats; voyage charter services; and Kaito route services. It also provides other related services, including vessel repair and maintenance, ship licensing agency, crew members, and maritime consultation; agency services for vessel chartering and related services on behalf of vessel owners; and project management services.