That's brilliant, chommel - makes it all clear what their job was.
Presumably this rubric is in all the books, is this the first time that has appeared in the page images?
Not at all, there is one posted in the stickied info posts in FAQ and Rules and Information boards. They appear in the original logs which remained with the ship for an entire voyage and filled out by various on-duty lieutenants 24/7. These books are thick, between 2 and 13 months of pages.
Every month, a writer or another lieutenant copies the entire month into one of the stack of short books the ship also had, and mailed it home to the Admiralty at the soonest possible time. This is why we do have full logs of ships who sank with their original logs still on board.
The copied logs did not waste paper on instructions of how to fill the the logs out. They also do not have a very interesting page where the officers may list a full description of the ship, from the type of engines to how many cannon and boats the ship possesses. These pages are always meticulously filled out for the the first book of any voyage, and are very interesting. And if we happen to have both original and copied logs for any month, the team loves it - it tells them what the RN's accuracy was in these things.
Most of our logs are copies. This has the advantage of being a bit neater, using only one handwriting and presumably not being done when the ship is pitching and rolling a lot. But the original logs are fun, and it's nice knowing they were in the ship for a while. It's not so nice when someone is writing during a patch of bad weather, or finds out a long note is needed at 11:45 when they'd already filled something in at 11:30.