panama canal
Kiel canal is the busiest waterway in the world this is located in germany
Depends how big the canal and ship are.
Sea routes to the Far East from Europe (through the Suez Canal and Malacca Straits) are the busiest.
New York City benefited greatly from the Erie Canal. It made NYC the busiest port on the Atlantic Ocean.
Ship Canal Bridge was created in 1961.
The Port of Miami
The busiest shipping lane it's the red sea all the way trought the canal de suez. It connect almost 4 continent and save billions of dollar since the creation of the canal.
pnama canal
Sea routes to the Far East from Europe (through the Suez Canal and Malacca Straits) are the busiest. In addition, the North Atlantic sea route, linking the US and Canada to Europe, is very busy as well. The Port of Singapore is the world's busiest sea port in terms of tons transported.
The Ali-ali-O is the Manchester ship canal built in the 1880's and early 1890's. It turned Manchester in to England's 3rd most important Trading port despite the fact that Manchester is over 50 miles from the coast. There would have been hundreds of big ships using it everyday bringing in cotton form the USA, so it is very likely that one of these large ships sailed on the last day of September. the Canal is no longer in major use, as it it not big enough to deal with today's modern ship sizes.
It is the longest big-ship ( as opposed to sub-sized barges) canal of its type in the World. It is a sea-level canal and does not require locks. it had movable bridges for traffic control at one time- but these were not, strictly speaking, hydraulic locks.