Print two sets of ships in different colors. Use PLA material.
For example, a base fleet may consist of: 1x carrier, 3x aircraft, 2x cruiser, 3x submarine.
Then place the ships in a large tank of water (bathtub or large bowl).
For assistance, use the handle to gently lower the ships to the surface of the water. The ships will float thanks to the surface tension. Airplanes should be on the carrier. Then take two straws and plasticine. Make little projectiles and blow them into ships. The winner is the one who sinks enemy ships first.
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