Lost at sea, I'm out of this world

Question

At first, I'm hazy
With a switch, I'm explosive
Lost at sea, I'm out of this world
Without you, I'll be taught

What am I?

Answer 1

I think at first you are

UNCLEAR - this is hazy

With a switch, I'm explosive

NUCLEAR - switched N and U

Lost at sea, I'm out of this world

UNREAL - lost C and anagrammed

Without you, I'll be taught

LEARN - now removed U and anagrammed.