"Sea Battle" is a game for two participants in which players take turns calling coordinates on an unknown opponent's map.
If the opponent has a ship at these coordinates (the coordinates are occupied), then the ship or part of it is "drowned",
and the hit gets the right to make another move. The player's goal is to sink all enemy ships first.

The playing field is usually a 10 × 10 square for each player, on which a fleet of ships is located.

Are placed:
1 ship — a row of 4 cells ("four-deck"; battleship)
2 ships — a row of 3 cells ("three-deck"; cruisers)
3 ships — a row of 2 cells ("double-decked"; destroyers)
4 ships — 1 cage ("single-deck"; torpedo boats)

When placing ships, they cannot touch each other with sides and corners.

Next to the "own" field, a "stranger" of the same size is drawn, only empty. This is a section of the sea where enemy ships sail.
When hitting an enemy ship, a cross is placed on someone else's field, and when a blank shot is fired, a dot is placed. The victim shoots again.
The winner is the one who first sinks all 10 enemy ships.