I was disappointed with this product. Primarily bought because it has an 'Operational Campaign' system, but this turns out to be incomplete and the player is left filling in the gaps in the rules. The new navy lists are welcome, but most are incomplete and are missing significant classes of ships. And don't expect much support; messages left on the publisher's forum, and emails, asking if there is an errata, or any supplementary materials to resolve these issues, have gone unanswered. I am glad I have the supplement, and the information that is in it will be useful, but it is incomplete and does not live up to the expectations generated by the description.