Accuracy of Y Gerat

[Werfer]

This article http://tx.mb21.co.uk/gallery/alexandrapalace/war.asp
states that Y gerat was "potentially very accurate"?

Was it accurate enough to allow eg the bombing by night of the Castle Bromwich Spitfire factory?

[Werfer]

Regarding the query on the accuracy of Y gerat, this by "Pips":

"Castle Bromwich was first bombed by aircraft from KGr 100 on it's first mission flying from Vannes on France on 13/14 August 1940. 21 aircraft set out to bomb the Dunlop works at Bimingham and the Spitfire factory at Castle Bromwich. The aircraft flew individually, with two to five minute seperations. All were guided by the X-Verfahren signals. Eleven bombs fell on the Spitfire factory.

Y-Verfahren was first utilised for an operational attack on the night of 9/10 October, 1940, when two aircraft from III./KG 26 raided the Crown Tube Works at Birmingham.
Y-Verfahren was far more advanced than X-Verfahren, as X was to Knickebein.

Y-Verfahren (made up of Woton II ground stations and Y-Gerat equipment on board the aircraft) as precision fixing by electronic distance measuring was more precise than that provided by cross beams (the X-Verfahren system). In trials it was found that, using Y-Verfahren, it was possible to hit tragets the size of a factory or powere station at distances up to 120 miles. Larger targets such as airfields, dock area's or specific industrial districts in cities, could be hit at ranges of 200 miles or more. To achieve this though aircraft had to fly at 20,000ft or higher to ensure good reception of the VHF signals. The main limitation to the Y-Verfahren system was that a ground station (Woton II) could only handle up to five aircraft at any one time.

There is an excellent book on the German night bombing war titled "Pfadfinder - Luftwaffe Pathfinder Operations Over Britain 1940-44" by Ken Wakefield. As much detail is concentrated on the signalling systems and countermeasures of the electronic battle as is on the units involved and the actual raids."