From Wikipedia
Recently the dam in the Bug, making it impossible for ships to pass, has led to a considerable neglect of the most western part of the Mukhavets; some of the locks have been filled in and Brest Harbor can only be reached by vessels approaching from the east.[3]
More recently efforts have been undertaken to restore the canal to a class IV inland waterway of international importance. In 2003 the Government of the Republic of Belarus adopted the inland water transport and sea transport development program to rebuild the Dnieper–Bug Canal shipping locks to meet the standards of a class Va European waterway. According to the Belarus government (see report below), four sluice dams and one shipping lock have been rebuilt which allow for the passage of vessels 110 meters (361 ft) long, 12 meters (39 ft) wide with a draught of 2.2 meters (7 ft). It is expected that reconstruction will continue over the next few years.
Current Russian light carriers:
The main dimensions of the light multi-purpose aircraft carrier (on the constructive waterline) are 304 (260) meters x 78 (38) meters x 23 (8.5) meters.
The Canal is too narrow and too shallow