Welcome to the Achaea Forums! Please be sure to read the Forum Rules
Shiplogs don't work, and I know that they were changed some time ago and that change caused them to not work. I honestly don't recall what the change was, other than that it caused them to not work.
Currently you can only see something in shiplog shipname, not shiplog shipname 0 1, 0 2, etc.
This is an issue that has major problems associated with it, especially on shared ships like those owned by organisations. In particular, the problem is that you can't check to see who else has done things on the ship unless you check at exactly 23:59GMT every day, otherwise you will very likely miss some of the information.
For shared ships, this means you lose information about crew, docking, strongbox, etc.