I have found that boats can be placed and sat in underwater. When under the water you can place the boat in any underwater area. Sitting in the boat will keep the boat where it is or sometimes sink. It can't be moved by the player as you normally would.
Not sure if this was meant to be or not, seems like a bug.
Comments 3
Do you mean system setup (i.e mobo, graphics card etc) or minecraft version and java information?
OS Name Microsoft Windows 10 Home
System Type x64-based PC
Processor Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz, 3501 Mhz, 4 Core(s), 4 Logical Processor(s)
Graphics: NVIDIA GeForce GTX 970
Java: 1.8.0.25
Boat sinking is intended (MC-89944)
Can you attach a screenshot of your setup?