Transshipment of containerized cargo requires a Customs transshipment permit and supervised loading, sealing, segregation, and timely export. Transshipment of imported containerized cargo from an Indian gateway port to a foreign port requires a Customs transshipment permit filed by the ship master, agent, NVOCC or authorised representative; no bond is required for permission to load. Loading and export operations must occur under Customs supervision with Preventive Officer endorsement and correct IGM/EGM coding for container status and destination. ITP LCL containers must be unloaded only with permission, examined for tampering, stored in segregated secure premises under Customs escort, and LCL consignments for foreign ports must be de-stuffed, segregated, restuffed and sealed under Customs supervision and recorded in EGM. Custodians must maintain records, provide security, execute a thirty-day value bond, and ensure export within the prescribed period, while prohibited goods and security risks are barred from transshipment.