 The Berkshire No. 7 is a small wood and steel canal barge that measures 104 feet ( 32 m ) long with a 20 feet ( 6 @.@ 1 m ) beam . The depth of the hold is listed at 10 feet ( 3 @.@ 0 m ) and it had a listed capacity of 216 tons . It is a transitional canal barge with steel framing and wood planking over the skeleton . Clouette describes the hull as being " nearly rectangular in profile , section and plan , with squared @-@ off stern and bluntly rounded bow . Low bulwarks with scuppers rise slightly to a peak where they join the prominently projecting stem " . The superstructure is primarily of a single low coaming with convex hatch covers that runs almost the full length of the shop . A rectangular cabin rises up above the coaming and has a companionway in the rear . The Berkshire No. 7 is listed in the U.S. Registry as # 172071 . 
