Quoted from the infocard:
The sole remaining ship in the once grand Rheinland Navy, the Battleship Westfalen, is tasked with preventing the spread of pirates into Rheinland space and dealing with attacks by Unioner terrorists. In the past the Westfalen also assisted in preventing breakouts from nearby Vierlande Prison.
Quoted from a news report:
Kusari Fleet Destroyed
In what has been described as the largest battle ever fought in the colonies, a massive Rheinland attack force completely destroyed the Kusari Fleet stationed in the Honshu system. Led by a group of over 40 Rheinland battleships , the Chancellor's onslaught on Kusari seems unstoppable. The Shogun has mobilized all reserves, and the Kusari Naval Forces are now desperately attempting to establish a defensive ring around New Tokyo.
That news quote doesn't even include all the known Battleships seen during the SP game such as:
Battleship Westfallen (Hamburg)
Battleship Hel (in orbit of New Berlin) + escorts
Battleship Freya (New Berlin>Frankfurt Jump) + escorts
Battleship Thor (Frankfurt>New Berlin Jump) + escorts
Battleship Tyr (near Mannheim Station, Frankfurt) + escorts
...plus the others who's names I can't remember (+ escorts!).
Now since there are no further battles mentioning the loss of any of the 40 Battleships from the news report (although I will acknowledge that at least some must have been destroyed during the battle between Kusari and Rheinland fleets in New Tokyo) the Rheinland Navy does have more Battleships than the Westfallen infocard would lead us to believe (anywhere from 5 to 45).
So the infocard is:
a) Wrong.
b) Deliberatly misleading us (military secrets and all that).
c) Referring to the sole remaining ship of the 'Grand Fleet' of the Imperial Rheinland Navy just after the 80 Year War.
We don't really own this place, just break a few arms if we have to - Bounty Hunter Mitch Murphy, Bonn Station.