This Practice Note looks at the enforcement of security by a mortgagee following an event of default under a ship finance transaction and in particular, covers: • the mortgagee's right to take possession of the vessel • private sale of the vessel by the mortgagee • arrest and sale of the vessel by the court (judicial sale), and • maritime and possessory liens If the owner of a vessel commits an event of default, amounts secured under the ship mortgage will usually become immediately due and payable. If the amounts due are not paid, the mortgagee may enforce its security and look to sell the ship and recover amounts due. In order for the mortgagee to obtain maximum protection in the UK, the ship mortgage should be registered against the vessel at the UK ship registry and, if the mortgagor is a body corporate under Companies Act 2006 (CA 2006), at Companies House under section 859A within 21 days of its creation. If the mortgage is not registered, although it may still be