Yep
Thats definitely lee slipway. Back in the late 80's and early 90's rings phantoms marshans and crusaders used to congregate at the weekends at the lee on solent slipway - nowadays all you see there are wetbikes
Pal of mine had a cougar cub when we were nippers and used to put it in at lee in the mid ninetees. Only had a little mariner 9.9 but still felt fast as fcuk. Always felt like it was gonna flip though especially when going into a head wind
was a bit exposed down there as well for such a little boat