can this be used with RSRD 575 as well? thanks a lot, I was thinking to do exactly the same thing myself
what source did you use? I have made an excel sheet using gutted's great ShipDataFetcher, one value differs from your's:
large modern tanker is 492ft in my list and about 630ft in your's. hmmm, all other I checked seem to be the same. although I couldn't find all, is this because I used the RSRD 575 database?