I've been working on a Submersible Log Database based on the Airship Log Database by Neri Feralheart. I've been using it myself to make sure it works as it should, so far seems fine although some of the exp calculations in the master voyage log seem a little off as well as survey/travel time calculations in the trip planner sheets (these were also slightly off on the Airship Log Database due to some randomness between sectors.)

https://docs.google.com/spreadsheets...KofeIrecr9q3DY