When ejecting from a boat at normal of full speed the player just turns into a lifeless ragdoll but does not get death screen and end of mission ; basicaly he floats slowly to the bottom with no control. AI in same team seems to continue about their business as if the player had died (after about 1 min of floating)
Units used : Attack boat / Diver Teamleader(player)
Additional info from duplicate ticket:
If the player is hit by a boat while in the water then they go into ragdoll mode and don't come out of it until they have hit the seabed.