Floating Sandbox Simulator is a realistic two-dimensional mass-spring network, which simulates physical bodies floating in the water.
See what happens when different object interact. You can draw your own objects using different color and materials in the library. The material has its own unique properties such as mass, strength, stiffness, other properties that reflect real life.
You may also use a handy template image that you can use to quickly select the right materials for your object.
As Always, Good Luck and Have Fun.