Sharp-kun: I have a manga in which Mazinger Z launches this way. It didn't go well.
HeWhoPostsStuff: You almost expect the Eva to jump up and down, feet smoking, once she gets to the surface, shouting“Owww! Hot! Hot! Ouch! Ooh! Owww!” Then, of course, she'll have to scramble to the nearest large body of water and jump in, and then sigh out a relieved “aahhhhh” as billowing steam rises from her feet.