Use in canals Lock (water navigation)

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locks of panama canal during construction, 1913.


early artificial canals, across flat countryside, round small hill or depression detouring (contouring) around it. engineers became more ambitious in types of country felt overcome, locks became essential effect necessary changes in water level without detours uneconomic both in building costs , journey time. later still, construction techniques improved, engineers became more willing cut directly through , across obstacles constructing long tunnels, cuttings, aqueducts or embankments, or construct more technical devices such inclined planes or boat lifts. however, locks continued built supplement these solutions, , essential part of modern navigable waterways.







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