Any person claiming an interest is entitled to a prompt hearing in which the plaintiff is required to show why arrest or attachment should not be vacated or other relief granted consistent with the federal admiralty procedural rules, whenever property is arrested or attached.  A claimant is entitled to property without the necessity of paying costs incidental to its seizure, upon giving a bond.  A bond given to secure the release of a vessel, acts as a substitute for the vessel, which is thereafter discharged and freed from the liens involved in the suit.