Welland Canal Port Maitland. With the opening of the extension, the canal stretched between the two lakes, with 40 wooden locks. The minimum lock size was , with a minimum canal depth of . Deterioration of the wood used in the 40 locks and the increasing size of ships led to demand for the Second Welland Canal, which used cut stone locks, within just a few years. In 1839 the government of Upper Canada approved the purchase of shares in the private canal company in response to the company's continuing financial problems in the face of the continental financial panic of 1837.
Manchester Ship Canal eventually culminating in the closure of the docks at Salford. Historian Thomas Stuart Willan has observed that "What may seem to require explanation is not the comparative failure of the Ship Canal but the unquenchable vitality of the myth of its success". Unlike most other British canals, the Manchester Ship Canal was never nationalised. In 1984 Salford City Council used a derelict land grant to purchase the docks at Salford from the Ship Canal Company, rebranding the area as Salford Quays. Principal developers Urban Waterside began redevelopment work the following year, by which time traffic on the canal's upper reaches