On page 200 of the core book, it talks about the Armoured Bridge.

On page 201, the table lists only the Armoured Command Bridge.

The Command Bridge in the table costs 1 Ship Point, while the Armoured Command Bridge costs 0 SPs.

I sent in a question to about this to FFG.

"Armoured Command Bridge" is just "Armoured Bridge," actually. The Command Bridge costs +1 ship point, because it offers better bonuses than the Armoured Bridge.

Sam Stewart
Associate RPG Designer
Fantasy Flight Games

So there you go.