law: 5. Arrest of vessel in rem.
  (1) The High Court may order arrest of any vessel which is within its jurisdiction for the purpose of providing security against a maritime claim which is the subject of an admiralty proceeding, where the court has reason to believe that-
  (a) the person who owned the vessel at the time when the maritime claim arose is liable for the claim and is the owner of the vessel when the arrest is effected; or
  (b) the demise charterer of the vessel at the time when the maritime claim arose is liable for the claim and is the demise charterer or the owner of the vessel when the arrest is effected; or
  (c) the claim is based on a mortgage or a charge of the similar nature on the vessel; or
  (d) the claim relates to the ownership or possession of the vessel; or
  (e) the claim is against the owner, demise charterer, manager or operator of the vessel and is secured by a maritime lien as provided in section 9.
  (2) The High Court may also order arrest of any other vessel for the purpose of providing security against a maritime claim, in lieu of the vessel against which a maritime claim has been made under this Act, subject to the provisions of sub-section (1):
  Provided that no vessel shall be arrested under this sub-section in respect of a maritime claim under clause (a) of sub-section (1) of section 4.