- Ship’s Photos
- Sea Ports of the World
- Maritime Institutions
- Sea Lover’s Community
- National Digital Library of India
- Encyclopedia of Ship Technology by WÄRTSILÄ
- International Association for Classification Societies
- American Bureau of Shipping
- Bureau Veritas
- China Classification Society
- Croatian Register of Shipping
- Det Norske Veritas Germanischer Lloyd
- Korean Register
- Lloyd’s Register
- Class NK
- Registro Italiano Navale
- Russia Maritime Register of Shipping
- Indian Register of Shipping
