Section 26, The Customs Regu- Citation

All stores which are required for the use of the master, Use or.officers, crew and passengers while an aircraft or ship is in ~~~~s m port shall on request be produced separately to the boarding officer who may either approve of the quantity produced or require a portion or the whole of such stores to be placed under seal. All other stores must be sealed by the boarding officer. Should the quantity of stores unsealed prove insufficient, application for the unsealing of further stores shall be made to the proper officer who will release such quantities as in his discretion he considers necessary and re-seal the remainder: Provided that the boarding officer may permit any stores to remain unsealed where he is satisfied that due precautions will be taken against the smuggling of the stores so left unsealed.