IV. In order to facilitate the putting into force of the above arrangements in a practical manner, the participating Powers have agreed upon the following arrangements:
1. In the western Mediterranean and in the Malta Channel, with the exception of the Tyrrhenean Sea, which may form the subject of special arrangements, the British and French fleets will operate both on the high seas and in the territorial waters of the participating Powers, in accordance with the division of the area agreed upon between the two Governments.
2. In the eastern Mediterranean,
(a) Each of the participating Powers will operate in its own territorial waters;
(b) On the high seas, with the exception of the Adriatic Sea, the British and French fleets will operate up to the entrance to the Dardanelles, in those areas where there is reason to apprehend danger to shipping in accordance with the division of the area agreed upon between the two Governments. The other participating Governments possessing a sea border on the Mediterranean undertake, within the limit of their resources, to furnish these fleets any assistance that may be asked for; in particular, they will permit them to take action in their territorial waters and to use such of their ports as they shall indicate.
3. It is further understood that the limits of the zones referred to in sub-paragraphs I and 2 above, and their allocation shall be subject at any time to revision by the participating Powers in order to take account of any charge in the situation.