The connection between the Borkum and Naxos G.S.R. It was plugged into the Naxos and signals received were, therefore, heard through the Radione on the loudspeaker. It was stated that the Borkum contained a detector, two condensers and one coil. It was connected to the drum-shaped dipole-type aerial. This was another very small box, similar in outward appearance to the Naxos, which covered a wavelength from 3 cm. Projecting from this container at an angle of 45 0 to the horizontal was a smallģ. The prisoner believes that the frequency tuning takes place in the antenna itself, which consisted of a wooden rod about three feet long at the top of which was a metal container inside which, the prisoner believed, there was a condenser and possibly a coil. The high frequency stage of the Radione is closed off. It was stated that within the Naxos itself there was an intermediate stage and an amplifier. This was the small apparatus described in Op-16-Z Final Report G/28, which operated through the low frequency stage of the Radione to a loudspeaker. This set could be plugged in either to the drum-shaped dipole-type aerial or to the figure-8 array on the back of the Radar mattress.Ģ. It is similar in all respects the Wanz-G1 except that it did not radiate. This is a new and improved type of Wanz covering a wave band from 1.30 m. (See Op-16-Z Final Report G/28 for description of Radar set.)ġ. On back of mattress aerial were 2 figures of eight which could be used in place of the drum-shaped dipole-type aerial to get a bearing with the “Wanz” G.S.R. The section of the Bridge forward of the periscope mounts was lowered 10 cm. was built into the bridge fairing on the port side. It accommodated 3 men and afforded good protection from M.G. thick, 1.5 meters high was built into the inboard bridge fairing on the starboard side just forward of the main induction. “Air Raid Shelter”: An armored shelter of plate about 15 mm. Gun Platforms: Two, second being on same level as after part of Bridge.ī. Time: 14 meters in 30 seconds, 20 meters in 40 seconds.Ī. Three waterproof bulkheads: Forward and aft of Galley and between Diesel and Electric Motor Room.Įxtreme depth: Stated to have been 280 meters, but also stated capable of even greater depths.

Bridge fairing was not armored and was shot through by aircraft fire at sinking. Spacing between pressure hull and upper deck 50/60 cm. Five hatches: Conning Tower, Bow Compartment, Galley, Engine Room, Stern Compartment. Four pressure-proof bulkheads one each fore and aft of Control Room, one aft of Bow Compartment and one forward of Stern Compartment.

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