The emboss effect looks bad especially when the texture is scaled so high. It's looking like plastic, or like grey chocolate. Also if the object is moving it may look pretty unrealistic since the "shadows" are not dynamic.
On still images it gives some kind of bumpmapping effect, but really only a trace of it.
It may look much better when you scale the texture in a way that makes it look less blur. Additionally you may add a texture layer with some very fine grainy structure, so even close up looks are not blur.
You may have to work on your UV coords for the ship to get a decent resolution with eg. a 1024 texture.
On still images it gives some kind of bumpmapping effect, but really only a trace of it.
It may look much better when you scale the texture in a way that makes it look less blur. Additionally you may add a texture layer with some very fine grainy structure, so even close up looks are not blur.
You may have to work on your UV coords for the ship to get a decent resolution with eg. a 1024 texture.