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A good point. If you are in the area for a whole week, I would suggest you consider doing both -a 'north' charter out of Nags Head, and a 'south' charter out of Hatteras. The north charter will probadly be in colder water (60s), but you can dive wrecks like the U-85 and the Jackson, for example, both of which are good dives. Out of Hatteras, definitely recommend the Dixie Arrow and the Proteus if nothing else, and the water will be warmer.. . but diving out of Nag Head you are in the Labrador current and the water will be cold and green (50's and 60's at depth). I stay in Duck (will be there next week) and drive the extra distance to get to Hatteras where you will hit the gulf stream, 80 degree blue water. Worth the drive in my opinion.