The classification methods of Seazeal marine service industry mainly include: 

1. The classification of service flow: the upper reaches of Seazeal marine service industry chain are shipping transaction and its service, and the middle reaches are shipping industry, downstream is including cargo handling, stockpiling, warehousing and other shipping industry. 

2. The high-end industry of modern shipping service mainly includes financing insurance, maritime code, policy consultation, technical standard and so on The medium-end industry mainly refers to the provision of international transit trade transportation, large-scale international mail ship services, all kinds of maritime transport ship leasing and ship repair services; Low-end industry mainly refers to the provision of modern shipping terminals warehousing, inland transportation, customs agents and other related services.

 3. The classification of service function first is the service industry around shipping production activities, such as ship brokering, ship survey, ship registration, ship equipment procurement, ship agency, ship supply, ship repair, crew labor, etc. , this kind of shipping service industry together with shipping transportation forms the shipping industry chain, the other is the supporting service industry, such as pilotage, towing, tallying, warehousing, land transportation, cargo agency, etc. Third, shipping derivative services, such as ship financing, shipping insurance, maritime law, research and consulting, which serve port and shipping production and the above two types of shipping services.