Another excellent French site

http://association-sas.chez-alice.fr/index.htm

SOE containers

Here is a link that most of you may already know about, but which I post anyway

http://philippe.chapill.pagesperso-orange.fr/les_parachute_de_largage.htm

It is in French, but Google translate helps. It has a lot of information about containers, their size etc.

The containers used on Lysanders are described. No mention of the Whirlwind, but I doubt they were used for SOE.