I am currently working on a UK sea areas map. Inspiration for it is the BBC Radio4 shipping forecast. Named areas are Viking / North Utsire / South Utsire / Forties / Cromarty / Forth / Tyne / Dogger / Fisher / German Bight / Humber / Thames / Dover / Wight / Portland / Plymouth / Biscay / Trafalgar / FitzRoy / Sole / Lundy / Fastnet / Irish Sea / Shannon / Rockall / Malin / Hebrides / Bailey / Fair Isle / Faeroes / Southeast Iceland
Peter Jefferson's 'And now the shipping forecast' covers the subject from all angles. I also stumbled across this live ships map which tracks position of ships around the world.
Any feedback, (especially from mariners off UK's shores) is much appreciated.