Quote Originally Posted by starseeker
The only help I can give is that this word that keeps coming up (next to the distance measurements) is in katakana so its probably from English. It appears to read bu/pu ro be/pe ra. I'm not sure about the first and third symbols because the resolution is a tad too low to distinguish between two small dashes and a small circle.
It's puropera. Propellor.

The kt. abbreviation is used here for knots, not kilotons. I can tell you that much. I have no desire to spend hours and hours trying to figure out all the kanji stuff, though.