submarine fast not slow

you have to link an controller you have to look at the the links inside and outside look outside first to see where you have to link the controller but make sure you do D is for left and A is for right because it will flip flop when you go under the water you must add oxygen to the tank because you will die if not in creative mode make sure their is NO holes in the submarine you will die fast make sure you have the oxygen on before you go under for about 3 seconds then go under make sure for the radar you link with a data link because they will un pair in the buliding process we will be coming out with a video soon and how to build a oxygen maker so you can refill your tank