In admiralty law, a maritime lien is a privileged claim upon sea-connected property, such as a ship, for services rendered to, or the injuries caused by that property. In common law, a lien is the right of the creditor to retain the properties of his debtor until the debt is paid.
There are three classes of liens, viz.: –
 - Possessory liens, subdivided into (a) particular liens, and (b) general liens.
- Maritime liens.
- Equitable liens.