There was a shop at Gunwarf Quays in Portsmouth that sold very nice prints of boats and the sea (I have a 5 foot wide one of the needles above my desk). They used to do mailorder from their website (although the address escapes me and I couldn't find it on google).
I say there was a shop.....according the Gunwarf website it isn't there anymore. Does anyone know if it's still there or did it close recently?