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Here are all the different version of the 3.7cm Flak M42U found on Type VIIC's3.7cm Flak M42UThe 3.7cm Flak M42U was the marine version of the 3.7cm Flak used by the Kriegsmarine on Type VII and Type IX U-boats. The improvement was base on the earlier 3.7cm Flak SK C/30 developed by Rheinmetall. The 3.7cm Flak M42U used several types of mounts and entered service in autumn 1943.LM 42U MountThe LM 42U mount was developed specifically for the 3.7cm Flak M42U. It was man by a 3 man crew, with a fourth man, the loader.LM 43U MountThe LM 43U mount was the final deign of mount used on U-boats. It further improvement on the LM 42U. The LM 43U was only known to be installed on three U-boats (U-1171, U-1305 and U-1306).DLM 42U MountThe twin mount was base on the design, in which the 3.7cm Flak M42U guns were mounted side by side.Fig. 1. A Single 3.7cm Flak M42U gun on the LM 42U mount.Fig. 2. A Single 3.7cm Flak M42U gun on the LM 43U mount.Fig. 3. A Twin 3.7cm Flak M42U guns on the DLM 42U mount.
Hi All Last picture, and finally NZSnowmanDougie suggested I show you this last pic, hope you're sitting down, this is how not to restore the deck of a type IXC40 courtesy of Mersey Travel Regards Jon
Quote from: tore on 24 Feb , 2014, 07:42SimonI fully realise there are limits to details however I could not resist adding a few more details to the schnorchel system as you see on the drawing below. The locking pin eyes are obvious. The hydraulic stuffingbox drain is important to prevent oilslick. The inboard drain valve is shown on the photo and the drain ends into the big drainbox on the forward bulkhead port side of the controlroom. The mast position indicator I have mentioned before. I assume the connection from the hullrod to the mast could be teleflex as fitted on the mechanical indicators for the hydroplanes. The hull transmission is done by a steelrod moving up and down. The cable is indicated on the drawing as heatingcable, I cannot remember that but guess it could be for the radar detectionsystem as well.ToreSpend all afternoon looking for the heating cable and radar detection cable hull openings, could not found them in any photo’s of U-995 Will have it add it to the list of things to check on U-995 when I get there one day.
SimonI fully realise there are limits to details however I could not resist adding a few more details to the schnorchel system as you see on the drawing below. The locking pin eyes are obvious. The hydraulic stuffingbox drain is important to prevent oilslick. The inboard drain valve is shown on the photo and the drain ends into the big drainbox on the forward bulkhead port side of the controlroom. The mast position indicator I have mentioned before. I assume the connection from the hullrod to the mast could be teleflex as fitted on the mechanical indicators for the hydroplanes. The hull transmission is done by a steelrod moving up and down. The cable is indicated on the drawing as heatingcable, I cannot remember that but guess it could be for the radar detectionsystem as well.Tore
Simon.I cannot find the cable hull openings either, but for sure the U 995 had a radar detection antenna on top of the schnorchel and some wires had to go into the pressurehull possibly near the sonar/ radioroom.Tore
Simon.I agree this is probably the radarwarning cable going towards the sonar radio rooms. As to the red painted pressurehull opening it looks like a cable opening as well. Could that be the removed heatingcable?.Tore