Thunderbirds Are Not Go!!!

Right, I'm trying to build me up a Tracy island with these haggard old Blue Peter prints but someone's spilt mustard sauce over the lettering and I don't know where Thunderbird 4 goes. So I need someone to use the Interhighway to sort me out with a new set of plans as soon as practical. I'm totally in a mood for playing but without the blueprints where the fuck is Alan blasting off from?