Canal name Year opened Length Maximum boat length x beam x draft (m) Start point End point White Sea–Baltic Canal 1933 227 km (141 mi) 443 x 47 x 4 Russia: Lake Onega Baltic Sea in Saint Petersburg Rhine-Main-Danube Canal 1992 171 km (106 mi) 190 x 11 x 4 Germany: Main at Bamberg Danube at Kelheim Suez Canal 1869 193.3 km (120.1 mi) Unlimited x 78 x 20 Egypt: Port Said Port Tewfik Volga-Don Canal 1952 101 km (63 mi) 141 x 17 x 4 Russia: Volgograd Tsimlyansk Reservoir Kiel Canal 1895 98 km (61 mi) 310 x 42 x 14 Germany: Brunsbüttel Kiel Houston Ship Channel 1914 80 km (50 mi) 305 x 161 x 14 United States: Houston Gulf of Mexico Panama Canal 1914 77 km (48 mi) 366 x 49 x 15 Panama: Caribbean Sea Pacific Ocean Danube-Black Sea Canal 1984 64.4 km (40.0 mi) 138 x 17 x 6 Romania: Danube at Cernavodă Black Sea at Agigea Manchester Ship Canal 1894 58 km (36 mi) 183 x 20 x 9 United Kingdom: Eastham Locks Salford Quays Welland Canal 1932 43.4 km (27.0 mi) 226 x 24 x 8 Canada: Lake Ontario at Port Weller Lake Erie at Port Colborne Saint Lawrence Seaway 1959 600 km (370 mi) 226 x 24 x 8 Canada: Port Colborne Canada: Montreal