No, we have not sailed to Cape Horn. But we did go on a small Chilean cruise ship from Ushuaia and I landed on Cape Horn. The ship then proceeded through Tierra del Fuego to Punta Arenas. We then took another ferry from Puerto Natales to Puerto Montt, a 500 mile trip through the fjords of Patagonia. Had I remembered that I had been given this book it would have been invaluable! If you are thinking of doing something similar, then this book would be a good investment.
However, when we were weatherbound in Dingle, Ireland, we shared some time with a beautiful wooden ketch called Skoiern > Her French owner, Patrick, showed me a beautiful handwritten pilot book, beautifully coloured in. It was exquisite. Patrick quietly said it had been given to him by the wife of Bernard Moitessier. Heaven alone knows what that would be worth!