Locate the position of the 3 tanks of 7 cells in the grid. The tanks do not touch each other, even not diagonally. Numbers indicate the total number of tank cells in their row and column. Tanks can not cover cells with numbers. To cells are marked to be empty.

Locate the position of the 10-ship fleet in the grid. The ships do not touch each other, even not diagonally. The numbered squares are lighthouses, and indicate the total number of ship parts that are in the same row or column as the lighthouse. Ships can not touch the lighthouses, not even diagonally.