While browsing, as one does I came across a site with a few bargain priced ships.

Company is Board game extras they currently have a couple of frigates going for £12 and some 74s for £14.25 with postage £2.25 so a chance to increase your fleets at a reasonsble price.
I dont know stock levels but have a look and you may grap a bargain

http://www.boardgameextras.co.uk/sea...lory&Go=Search