In my days at sea the blackboard was king. It never crashed, and as long as it was updated, never by WiFi it worked fine. Anyway here’s the mysterious thing. I have an O level in marine engineering and I can decode quite a lot of this, but…… Everything on the right is a mystery. From the top. 1 to 13.
1: ?
2: ?
3: Windlass, steam presumably.
4: ?
5: Revs! Woohoo.
6: Main Circ pump.
7: Water circ pump. (Fresh, generator cooling maybe.