Busybee said..
Try Cath Hew on Icebird out of Ushuaia.
I met Cath in an anchorage on Ilas Hornos in 2016. She had just returned from a charter to the Peninsular.
'Icebird' is an
aero-rig , very interesting but I never could really work out the un-stayed rotating mast with jib on a fore-boom. Must be totally seaworthy though.
And, to the original poster, you cannot just arrive in Antarctica - there are serious permit requirements, and you have no hope of getting there other than on a fully supported charter. Sorry to pour cold water on your plans - but there is a lot of cold water down there!