In 1997 the Lake Champlain Maritime Museum’s Survey team discovered Benedict Arnold's 1776 gondola on the bottom of Lake Champlain. The Spitfire was the last unaccounted for vessel of the Battle of Valcour Island.

Image details: (from the Klein Associates website)

sonar image of the 54 foot gun boat which sits upright on the bottom of Lake Champlain. It is still in excellent condition. The image is 100kHz. The shadow from its 50 foot mast is clearly seen and the bow cannon is still in place.