K.T. Khlebnikov wrote a biography of his boss, Baranov: Chief Manager of the Russian Colonies in America. In this book he described the wreck of the Juno as taking place November 3, 1811 (O.S.), "not far from the port of Petropavlovsk near the mouth of the Viliui River". When Khlebnikov received news of the wreck on November 5, he and a colleague "immediately set out for the scene of the shipwreck".
The Viliui (Vilyuy) River is not in Kamchatka but in Eastern Siberia and its mouth is on the Lena River, not the sea. Is there another river with the same name? I've looked at some maps without seeing it.
Where did the ship wreck?