<Table> <Tr> <Th_colspan="2"> Suez Canal </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> Specifications </Th> </Tr> <Tr> <Th> Length </Th> <Td> 120.11 miles (193.30 km) (originally 102 mi or 164 km) </Td> </Tr> <Tr> <Th> Maximum boat beam </Th> <Td> 77.5 m (254 ft 3 in) </Td> </Tr> <Tr> <Th> Locks </Th> <Td> None </Td> </Tr> <Tr> <Th> Navigation authority </Th> <Td> Suez Canal Authority </Td> </Tr> <Tr> <Th_colspan="2"> History </Th> </Tr> <Tr> <Th> Original owner </Th> <Td> Suez Canal Company (Compagnie Universelle du Canal Maritime de Suez) </Td> </Tr> <Tr> <Th> Construction began </Th> <Td> September 25, 1859 (1859 - 09 - 25) </Td> </Tr> <Tr> <Th> Date completed </Th> <Td> November 17, 1869 (1869 - 11 - 17) </Td> </Tr> <Tr> <Th_colspan="2"> Geography </Th> </Tr> <Tr> <Th> Start point </Th> <Td> Port Said </Td> </Tr> <Tr> <Th> End point </Th> <Td> Port Tewfik, Suez </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Suez Canal </Th> </Tr>

When did they start building the suez canal