This really felt like a development book, setting up the next couple of books for some bang up, drag out fights. Not to say that the book is totally devoid of action, but the biggest danger in this book really came from nature (rouge waves, volcano's) and not from the Grik or to a lesser degree the New Dominion.
The fun (but sometimes dragging part) of this story is that there are number of diverse story lines all running concurrently. CPT Reddy and the Walker visiting New Britain, Sandra and the Princess still shipwrecked, the recovery of the ship full of P-40E's, the attempts to recover S-19, and the ongoing campaign against the Grik. Add in the nature of slow travel and sheer size of the Pacific and things are going to slow down.
That said, I will buying the next novel shortly. Great writing style and even when it is slow it is still a great read with engaging characters and societies.