With respect to the engagement of seamen outside India, the following provisions shall have effect:--
     When the master of an Indian ship engages a seaman at any port outside India, the provisions of this Act respecting agreements with the crew made in India shall apply subject to the following modifications:--
         (a) at any such port having an Indian consular officer, the master shall, before carrying the seaman to sea, procure the sanction of the consular officer, and shall, if not contrary to any law in force in that port, engage the seaman before that officer;
         (b) the master shall request the Indian consular officer to endorse upon the agreement an attestation to the effect that it has been signed in his presence and otherwise, made as required by this Act, and that it has his sanction, and if the attestation is not made, the burden of proving that the engagement was made as required by this Act shall lie up on the master.