My mistake . . . I have a book called The Line of Battle that looks exactly like the Seafarers series. In fact, it was stashed within the Seafarers and I simply read the titles from the books on the shelf. It is actually published by the Naval Institute Press as part of the Conway's History of the Ship series. I sincerely apologise.
Concerning the Scientific clippers, you are absolutely correct in saying that they are not that well detailed. However, each is large enough for detailing. I see them as a challenge to turn them into serious models. Scientific has been out of business for years, but these ships can be easily found and are quite affordable on eBay. I mentioned them because of your interest in clipper ships.
Bill