Boats become unable to move and will sink into the ground if you drive it from plane of water. It will not sink into the ground untill you leave the boat.

Boats become unable to move and will sink into the ground if you drive it from plane of water. It will not sink into the ground until you leave the boat.

You can watch the attachment to get further information.

Get the attachment (which is too large to upload) on this webpage:

https://pan.baidu.com/s/1gJHPKnQWltJ-lVMiHBMXFg 
The extract code is "bugs".