Section 11
SEC. 11. Arrest of Vessels—Upon the filing of the petition for the judicial foreclosure of a Preferred Ship Mortgage, or immediately thereafter, the applicant may apply exparte for an order for the arrest of the mortgaged vessel or vessels and the judge shall immediately issue the same, provided that it is made to appear by affidavit of the applicant, or of some other person who personally knows the facts that a default in the mortgage has occurred and that applicant files a bond executed to the adverse party in an amount to be fixed by the judge, not exceeding the applicant's claim, conditioned that the latter will pay all the costs which may be adjudged to the adverse party and all damages which he may sustain by reason of such arrest, if the court shall finally adjudge that the applicant was not entitled thereto.