Was rather afraid of that, as the British navy is far superior to my own, so I'm not exactly confident I'd be able to launch a successful invasion of the British isles, or do enough damage to their navy.
Its times like this where i think i should have been more gamey when winning the 100 years war and broke apart England when they surrendered.
Well, if they have that many light ships, do they also severely outnumber you with large ships? Light ships are terrible in combat. I wonder, with that many, if they might have a manageable number of large ships if you focused on a fleet of large ships. Also, are their Light Ships in a fleet by themselves? If so, you could get in position, declare war, and wipe out all their light ships before the heavies come to the rescue, and then just try to roll over and play dead/hold them off/etc.?
EDIT: Though, I suppose they could just end up doing a shattered retreat..