What I expected to happen was...:
was that it would create a slime ship that would move around the sky.

What actually happened was...:
The slime block connected to the ship and piston created a graphical glich making the prismarine ship that i build start duplicating its own blocks and instead of breaking the redstone like it usualy did (i dont know how to make a slime ship) it just keept making more and more blocks.

Steps to Reproduce:
1. make a V that is 3 blocks long
2. line it with redstone
3. then in the middle under it put 1 redstone torch on each side on the wall of the V under it on the bottom
4. then put 2 pistons (one on each side und on the bottom on the wall like you put the torches) on the front of the V 1 block away from the torch that you put
5. put a slime block 1 block away from the piston you put erlier
6. put dark prismarine on the V in front one block behind the slme block inbetween the piston and the slimeblock but one block above
7. put one extra redstone ont he back of the V and then put a redstone on top
8. stand back and look
The attached file is the world the glitch is in

"Also on the ship" in 14w26b redstone torches break instantly
but otherwise if you keep placing the redstone torches realy fast as they are breaking off it still works.