Ms. Baker,
Your question caught my curiosity and I checked the
deck plans of the Titanic which are available from the home page of this website in case you didn't know.
The marconi wireless room was on the boat deck but well inside and with no immediate exit to the boat deck. Therefore, with this in mind, the logical escape route would be, looking at the
deckplans, the two wireless operators' escape route would have been out of their wireless shack, forward along a corridor on the port side which also featured many of the officers' cabins, and out through a door to the boat deck between the fifth and sixth officers' cabins.
As for the skylight, I must say that I had never heard it before and was skeptical at first. However, I read the electronic transcripts of Harold Bride's testimony at the American Inquiry and part of it was a letter Bride sent to a lawyer for legal matters that was read aloud at the inquiry. I think this letter interestingly supports that they may have climbed out of a skylight:
"...but now we could hear the water washing over the boat deck, and Mr. Phillips said, "Come, let's clear out."
Leaving the cabin, we climbed on top of the house comprising the officers' quarters and our own, and here I saw the last of Mr. Phillips, for he disappeared walking aft.
I now assisted in pushing off a collapsible lifeboat, which was on the port side of the forward funnel, onto the boat deck."
Notice Bride says "climbed on top of the house comprising the officers' quarters". It is a possibility that they exited normally but then climbed onto the roof of the officer's quarters but I think that is major evidence toward the skylight theory.
Also is Bride's testimony at the British Inquiry:
16571. Did you and Philips leave?
- Yes, we left the cabin.
16572. What did you do?
- We climbed up on top of the marconi cabin and the Officers' quarters.
16573. That was right on the boat deck?
- Yes.
16576. After you got on to the roof, what did you do?
- They were trying to fix up a collapsible boat that was up there, and I went to help them.
16577. That was on the top of the Officers' quarters?
- Yes.