You could try Stormfly's mod:-
http://www.subsim.com/radioroom/showthread.php?t=154643
This is an extension to the standard free cam but
much more versatile. You can move your position to wherever you want and also access various controls and features. For example if you want to use the map, a simple mouse click on the map on the navigator's table will take you to it.
BTW: the standard shift+f2 would also enable the position change- so Squaresteelbar's suggestion was not at all invalid!