Ship identifier
- Code letters
- Craft Identification Number
- ENI number
- Hull classification symbol
- Hull classification symbol (Canada)
- Hull number
- IMO number
- International Maritime Organization
- List of hull classifications
- Maritime Mobile Service Identity
- Maritime call sign
- Naval Registry Identification Number
- Niña (ship)
- Official number
- Pennant number
- Ship class
- Ship prefix
- World Sailing