Any person furnishing repairs, supplies, towage, use of dry dock or marine railway, or other necessaries, to any vessel, whether foreign or domestic, upon the order of the owner of such vessel, or of a person authorized by the owner, shall have a maritime lien on the vessel, which may be enforced by suit in rem, and it shall not be necessary to allege or prove that credit was given to the vessel.
Subsection Q.
The following persons shall be presumed to have authority from the owner to procure repairs, supplies, towage, use of dry dock or marine railway, and other necessaries for the vessel: The managing owner, ship's husband, master, or any person to whom the management of the vessel at the port of supply is intrusted. No person tortiously or unlawfully in possession or charge of a vessel shall have authority to bind the vessel.
Subsection R.
The officers and agents of a vessel specified in subsection Q shall be taken to include such officers and agents when appointed by a charterer, by an owner pro hac vice, or by an agreed purchaser in possession of the vessel; but nothing in this section shall be construed to confer a lien when the furnisher knew, or by exercise of reasonable diligence could have ascertained, that because of the terms of a charter party, agreement for sale of the vessel, or for any other reason, the person ordering the repairs, supplies, or other necessaries was without authority to bind the vessel therefor.
Subsection S.
Nothing in this section shall be construed to prevent the furnisher of repairs, supplies, towage, use of dry dock or marine railway, or other necessaries, or the mortgagee, from waiving his right to a lien, or in the case of a preferred mortgage lien, to the preferred status of such lien, at any time, by agreement or otherwise; and this section shall not be construed to affect the rules of law now existing in regard to (1) the right to proceed against the vessel for advances, (2) laches in the enforcement of liens upon vessels, (3) the right to proceed in personam, (4) the rank of preferred maritime liens among themselves, or (5) priorities between maritime liens and mortgages, other than preferred mortgages, upon vessels of the United States.
Subsection T.
This section shall supersede the provisions of all State statutes conferring liens on vessels, in so far as such statutes purport to create rights of action to be enforced by suits in rem in admiralty against vessels for repairs, supplies, towage, use of dry dock or marine railway, and other necessaries.
MISCELLANEOUS PROVISIONS.