Three months after the damage from the grounding incident was repaired , she struck a mine , but successfully returned to port .
Gromoboi ran aground immediately after completing her repairs and was out of action for four months .
Three months after the damage from the grounding incident was repaired , Gromoboi struck a mine , but successfully returned to port .
Gromoboi ran aground immediately after completing her repairs and was out of action for four months .