Dear Alex,
I've filed all air raids on IJmuiden and as far as I know, there was no air raid on IJmuiden on 11th November 1943.
Also, nothing at all mentioned in the Kriegstagebuch des Marinebefehlshabers in den Niederlanden (Naval War Diary of Admiral Commanding The Netherlands) on this date.
Where does the info about this date come from?
Apart from that S74 was lost earlier that year. See this link:
http://www.schnellboot.net/de/km/schnellboote/
Regards,
Hans Nauta