As I start planning my qualifying passage (Plymouth UK - A Coruña Spain - Horta Portugal = Plymouth) I popped into The Sea Chest in Plymouth to discuss charts and they pulled out some NV Charts that looked ideal.  

As a UK sailor I use both Admiralty and Imray charts and had not come across NV charts in the past and wondered if anybody had any experience of them?  I am very much a chart based navigator and use the new fangled eletronic box of tricks in the cockpit as a referance tool and collector of data.