International transshipment rules allow FCL and approved LCL movement through designated ports subject to Customs supervision and custodian obligations. International transshipment is allowed for FCL and, at approved places, for LCL under Section 54(2), excluding goods prohibited under Section 11. Arrival procedures require prior application and Customs permission based on IGM details, correct electronic manifest coding for cargo movement and container status, Customs-supervised unloading and escort to approved secure premises, seal verification and resealing if tampered, and supervised de-stuffing/restuffing of LCL cargo with segregation for transshipment or home-consumption. Custodians must maintain records, furnish a general bond, ensure export within thirty days or extended period, and follow prescribed safeguards and operational conditions.