Timerover51 
September 11th, 2018 04:24 PM 
Definitions of Terms Used
I purchased the T20 CD from FFE, and have started looking through it. As I have a fondness for nautical vessels, I have been looking at the Watercraft book first.
For design, the term "vls" is used. It appears to represent a mass of 1 kilogram, and a volume equal to onefifth of a liter. Is my understanding of that correct?
Second, this would represent a specific gravity of 5, i.e. five times the weight of an equivalent volume of water. This would be considerably heavier than wood, but also lighter than iron or steel, which have a specific gravity of close to 8. Is this also correct?
I am more used to thinking in terms of displacement tons of 35 cubic feet, gross register tons of 100 cubic feet, and measurement tons of 40 cubic feet. I am looking at verifying the correct equivalence of one sets of terms to the other.
