Art 38. Ships chartered for that purpose shall be authorized to transport equipment exclusively intended for the treatment of wounded and sick members of armed forces or for the prevention of disease, provided that the particulars regarding their voyage have been notified to the adverse Power and approved by the latter. The adverse Power shall preserve the right to board the carrier ships, but not to capture them or seize the equipment carried. By agreement amongst the Parties to the conflict, neutral observers may be placed on board such ships to verify the equipment carried. For this purpose, free access to the equipment shall be given.