Jens, I'm speculating that the folks at GLP or where ever you encountered this question are focusing on the large flames that can sometimes be seen from aircraft taking off from carriers. There is a more basic expalnation than "wet starting" whatever that may be. It's the afterburners. When a plane takes off from a carrier the catapult only provides a portion of the necessary force. The rest comes from the plane's engines. Before the cat shot they ramp up to full power, inlcuding afterburner in some cases. This causes a large "flame" to shoot out the back end. It's quite impressive at night (I've seen it) especially from the old F-14's (now retired sadly).

Although I've ridden many carriers in the course of my job, you might ask Big Don who actually worked on carrier flight decks (and F-14's if I recall) about this.

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