Is there going to be a 7 vampirate book?

There is no evidence to support the existence of a seventh Vampirate book. The series currently consists of six books:

1. Vampirates: Demons of the Ocean

2. Vampirates: Tide of Terror

3. Vampirates: Blood Trial

4. Vampirates: The New Recruit

5. Vampirates: Black Heart

6. Vampirates: Dead Deep

There has been no announcement from the author, Justin Somper, or the publisher, Simon & Schuster, about a potential seventh book in the series.