This guide covers maritime liens and their enforcement from the creation of the lien through judicial sale and distribution. It begins with the in rem action and the personification that makes a vessel suable in its own name, then works through which claims generate liens, the presumption of authority that lets a charterer's order bind an owner's ship, and the prohibition-of-lien clause that sometimes defeats it. Priority chapters set out the full ranking, the inverse order rule within the necessaries class, and where a preferred mortgage sits. Procedure chapters distinguish arrest from attachment, cover the verified complaint and judicial review requirements, the post-seizure hearing, custodia legis costs, and the security mechanisms that obtain release. Later chapters address judicial sale and the clean title it produces, limitation of liability and the concursus, vessel status, jurisdictional limits, the bunker supply chain problem, and bankruptcy interaction.