JOIN MY SERVER. play.thehelmmc.net. Let's hit 500 Likes. Thanks for your support. The new set of Minecraft 1.8 update snapshots has given us the slime block, and this video will show you how to build a working submarine in minecraft. It doesn't take too many resources, and this redstone tutorial is easy enough for anyone to follow, so you'll have a working minecraft submarine in no time. |--| ___. Twitter.