Effective Nov. 1, the planned increase will be $200 per 20-foot equivalent unit and $400 per 40-foot equivalent unit.
The GRI will apply to all cargo moving from India to North Europe, the United Kingdom, the Mediterranean and Black Sea ports.
The national carrier earlier raised rates on the route with GRIs of the same amounts that took effect as of Feb. 4, March 1 and May 15.
State-owned SCI said the new GRI is necessary to offset soaring operational costs, and to be able to offer reliable services to customers.