1383 MULTILATERAL-NAVAL ARMAMENT-MARCH 25, 1936 the present Treaty; and, so as to reach all the other High Contracting Parties within the month of January in each subsequent year, any amendments in the lists and changes in the information. Article 20 Each of the High Contracting Parties shall communicate to each der construction, etc. of the other High Contracting Parties, so as to reach the latter within one month after the date of the coming into force of the present Treaty, particulars, as mentioned in Article 12 (b), of all vessels of the categories or sub-categories mentioned in Article 12 (a), which are then under construction for Him, whether or not such vessels are being constructed within His own jurisdiction, together with similar particulars relating to any such vessels then under construction within His own jurisdiction for a Power not a party to the present Treaty. Article 21 (1) At the time of communicating His initial Annual Programme of construction and declaration of acquisition, each High Contracting Party shall inform each of the other High Contracting Parties of any vessels of the categories or sub-categories mentioned in Article 12 (a), which have been previously authorised and which it is the intention to lay down or acquire during the period covered by the said Programme. (2) Nothing in this Part of the present Treaty shall prevent any High Contracting Party from laying down or acquiring, at any time during the four months following the date of the coming into force of the Treaty, any vessel included, or to be included, in His initial Annual Programme of construction or declaration of acquisition, or previously authorised, provided that the information prescribed by Article 12 (b) concerning each vessel shall be communicated so as to reach all the other High Contracting Parties within one month after the date of the coming into force of the present Treaty. Previously author- ized, etc., construc- tion to be included in initial annual pro- gram. Communication of information to con- trcting Powers; time period. (3) If the present Treaty should not come into force before the TreatvyinsotOnme in 1st May, 1937, the initial Annual Programme of construction and fore before May 1, declaration of acquisition, to be communicated under Articles 12 (a) and 14 shall reach all the other High Contracting Parties within one month after the date of the coming into force of the present Treaty.
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