Collision causes object to fly away at high velocity

I have a game where the user can fly a ship into islands to destroy them. When the ship collides with any of my islands, the island will seem to disappear but after further investigation, I observed the island just moves extremely far away instantaneously and then stops. I’ve changed the mass and drag but they don’t seem to be having an effect. Why is collision adding so much force?

This is the ship object

This is the Island object, the mass and drag are set to 100 in the code

This is a link to the apk to test out.
link text

If you want collisions to occur, the ship cannot be kinematic, as that assumes you are controlling how the collisions are functioning. Change the ship to non-kinematic, and change the velocity within a fixedUpdate() if you want collisions to function how you mentioned.