Divers aim to uncover stories behind shipwrecks | htrnews.com | Herald Times Reporter The seven men aboard the Floretta escaped in a lifeboat just a half-mile away as the iron ore schooner sank at the bow and exploded off the shore of Manitowoc in September 1885. The wreckage of the 134-foot-long, 26-foot-wide schooner sits in 180 feet of water where it sank in Lake Michigan, said maritime archeologist Tamara Thomsen. "The Floretta sits there basically as if she went down yesterday," Thomsen said. "Everything that was on board the ship in 1885 is down there and hasn't deteriorated at all."