Section 4. This Act shall apply to carriage by sea from a place within the Kingdom to a place outside the Kingdom or from a place outside the Kingdom to a place within the Kingdom, unless it is provided in the Bill of Lading that the law of another country or international law shall apply, in which case such shall apply; however, even if there is such a provision, if it is apparent that one of the parties is a Thai national or a juristic person established under Thai law, this Act shall apply.
In the case of transportation of Goods by sea within the Kingdom, if an agreement in writing is made for this Act to govern, then this Act shall govern mutatis mutandis.
In the case of transport for which freight is not charged, the Carrier is not liable under this Act unless a Bill of Lading, a receipt (of receipt of Goods) or a document of the same kind is issued in which event the Carrier must state in the Bill of Lading, receipt or other document that the Carrier does not accept liability for otherwise such cannot be invoked against a third party, or a Consignee, who has been assigned the rights under the Bill of Lading, receipt or other document.