1864 - The Federal transport steamer, Maple Leaf, struck a Confederate torpedo, now referred to as a mine, on the St. Johns River near Mandarin and sank immediately in three fathoms of water on this date. A detachment of Confederate artillery and a company of infantry troops were dispatched to the area to ensure that the wreckage was complete. The 181-ft long Maple Leaf was launched in 1851 in Ontario and was originally used as a freight and passenger vessel. It was leased to the U.S. Army in 1862 an used along the east coast as a military transport.