I have no idea how many pages are in this book, as there aren't any page numbers, but I'm up to the point of the blueprint floorplan of the boat. I'm stopping here for the night because my copy is too fragile to read in bed. So far, it's only just been determined that a murder has been committed, so there's not a lot of information to go on. But my first recurring though it is (put behind spoiler tags in case Themis-Athena wants to avoid any influence on her own investigating):
Nobody on that boat knows what Bolitho Blane looks like - are we sure he's the one that's dead, and not the secretary?