Hi Gentlemen,
Simon, Schnorchel on Laubie was installed in the middle of 1948. I believe, that it was taken from German supplies, which left in the French naval bases after war, so I believe, it was rather late version. I have attached some pictures of Laubie with Schnorchel. In this time, the shape of the conning tower was changed - from the Turmumbau IV configuration, French removed the after, lower platform.
Your second pictures present U-235 in October 1943, in Germaniaweft (see UAK symbol on the connnig tower). Moreover, U-325 was launched in March 1944, so she could not have installed Schnorchel in November 1943.
Schnorchel installed on U-235 was one of the earliest versions - was lowered and risen by means of cable winch.
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Regards
Maciek