No vessel, or master thereof, shall be regularly employed in the business of wrecking on the coast of Florida without the license of the judge of the district court for the district of Florida; and, before licensing any vessel or master, the judge shall be satisfied that the vessel is seaworthy, and properly and sufficiently fitted and equipped for the business or saving property shipwrecked and in distress; and that the master thereof is trustworthy, and innocent of any fraud or misconduct in relation to any property shipwrecked or saved on the coast.