This surreptitious rearmament, in violation of treaty obligations, starting even before the Nazi came into power, is illustrated by a 1932 order of Raeder, chief of the naval command, addressed to the main naval command, regarding the concealed construction of torpedo tubes in E-Boats (C-141). He ordered that torpedo tubes be removed and stored in the naval arsenal but be kept ready for immediate refitting. By using only the number permitted under the Treaty, at a given time, and by storing them after satisfactory testing, the actual number of operationally effective E-Boats was constantly increased.
This German order for the concealed armament of E-Boats, issued by Raeder on 10 February 1932, provides:
“In view of our treaty obligations and the Disarmament Conference steps must be taken to prevent the 1st E-Boat-Half-Flotilla, which in a few months will consist of exactly similar newly built (E)-Boats, from appearing openly as a formation of torpedo-carrying boats as it is not intended to count these E-Boats against the number of torpedo-carrying boats allowed us.
“I therefore order:
“1. S2-S5, will be commissioned in the shipyard Luerssen, Vegesack without armament, and will be fitted with easily removable cover-sheet-metal on the spaces necessary for torpedo-tubes. The same will be arranged by T.M.I. [Inspectorate of Torpedoes and Mining] in agreement with the naval arsenal, for the Boat ‘S1’ which will dismantle its torpedo-tubes, on completion of the practice shooting, for fitting on another boat.
“2. The torpedo-tubes of all S-Boats will be stored in the naval arsenal ready for immediate fitting. During the trial runs the torpedo-tubes will be taken on board one after the other for a short time to be fitted and for practice shooting so that only one boat at a time carries torpedo armament. For public consumption this boat will be in service for the purpose of temporary trials by the T.V.A. [Technical Research Establishment].
“It should not anchor together with the other, unarmed boats of the Half-Flotilla because of the obvious similarity of type. The duration of firing, and consequently the length of time the torpedo-tubes are aboard, is to be as short as possible.
“3. Fitting the torpedo-tubes on all E-Boats is intended as soon as the situation of the political control allows it.” (C-141)
Along similar lines the navy was also carrying on the concealed preparation of auxiliary cruisers, under the disguised designation of Transport Ships O. The preparations under this order were to be completed by 1 April 1935. At the very time of construction of these ships as commercial ships, plans were made for their conversion. This was the result of a Top Secret order from the command office of the navy, dated 12 March 1934, and signed in draft by Groos. This order bears the seal of the Reichministerium, Marineleitung, over the draft signature. It provides:
“Subject: Preparation of Auxiliary Cruisers.