50. In an action in rem any party may at the time of, or at any time after the issue of the writ of summons, apply to the Court or a Judge for the issue of a warrant for the arrest of property.
The party so applying shall before making his application file in the Court an affidavit containing the particulars prescribed by the following rules.
Such application shall be in writing signed by the person making the application or his advocate and shall be filed by the Registrar.
The affidavit may be in the Form C in Schedule I hereto.