USS Constitution - Frigate of the United States Navy
USS Constitution, a sailing frigate built in 1797 for the United States Navy, is in active commission at Boston, Massachusetts. She shows the culmination of the 18th Century frigate: powerful and fast. She is a wooden city at sea, able to provide for her 400 crew for months at a time as she cruises the world’s oceans. As an active duty ship, she is still crewed by sailors of the United States Navy. As this website shows the development of naval and artillery technology during the 19th century, Constitution shows the beginning point.
The Dahlgren Boat Howitzers of Hanover, Massachusetts
Two US Navy 12-Pounder Bronze Dahlgren Boat Howitzers are displayed in Hanover, Massachusetts flanking an 1878 Monument "Erected by the people of Hanover in grateful memory of her sons who died in the War for the Preservation of the Union."
The Gradual Increase 32-Pounder of USS Ohio at Boston National Historic Park
A US Navy 32-Pounder of 60 Hundredweight manufactured in 1820 is displayed at the Boston National Historical Park. This cannon was produced following the "Gradual Increase of the Navy" act and may have served on USS Ohio and other ships of the early United States Navy.
The Dahlgren Boat Howitzers of Webster, Massachusetts
Three US Navy Dahlgren Boat Howitzers are displayed at the Town Hall of Webster Massachusetts. One is a Rifled 12-Pounder Boat Howitzer. Two are smoothbore 12-Pounder Boat Howitzers.
BuOrd 32-Pounders in Townsend, Massachusetts
Preserved in Townsend, Massachusetts are a pair of Bureau of Ordnance 32-Pounders of 4,500 Pounds. One of these Dahlgren-style guns still has it’s firing lock installed upon its breech.