DETROIT RIVER FERRY STEAMER PROMISE. BUILT BY THE DETROIT DRY DOCK COMPANY FOR THE DETRO/T, BELLE ISLE AND WINDSOR FERRY COMPANY. Yard No. 108. Built 1892. Length, over all.............................................................. 130 feet o Length, on water line..................................................... 118 " o Beam........................................................................... 38 " " Beam, on water line......................................................... 34 " 6 Beam, over guards........................................................ 50 " o Depth, moulded........................................................... 13 7 Draft.............................................................................. 11 " o Gross tonnage 474.13, net 295.67. Engine, three cylinder, non-condensing, 22 by 24 inches. Boilers, two 9 feet jo inches by 12 feet; J25 pounds pressure. Special Feature: Has capacity for r,2oo passengers. 146