Coastal carriage through foreign territory requires harmonised transit procedures, documentation, marking and sealing requirements to permit movement and verification. Movement of coastal cargo through Sri Lanka and Bangladesh is allowed under a harmonised procedure using the Transportation of Goods (Through Foreign Territory) Regulations, 1965 with waiver of Bill of Coastal Goods filing for such transits; transit documents must include GSTIN or alternative tax identifiers and invoice references, containers and goods must be marked and sealed 'For Coastal Carriage through foreign territory', masters require proper officer clearance and endorsed transit manifests, destination customs must verify discharge and seals, and tampering or discrepancies are subject to customs adjudication and applicable prohibitions.