hist-brewing: Re: hist-brewing-digest V1 #427

Jeff Renner nerenner at umich.edu
Thu Oct 21 05:58:09 PDT 1999


Al Korzonas, Lockport, Illinois, USA <korz at brewinfo.org> wrote:

>Ships' tonnage is based on how many
>ton/tun casks of beer they could hold.

Well, not quite, at least not directly or today.  From World Book
Encyclopedia, 1988 edition, vol. S, p. 416:

"Deadweight tonnage is a ship's actual carrying capacity measured in long
tons. ... includes cargo, crew, passengers, fuel, supplies and spare parts.
Freighters and tankers arte generally described in terms of deadweight
tonnage."

It also describes two other measurements of tonnage, displacement tonnage,
"the number of long tons displaced ... by a ship ... is generally used for
naval craft," and gross tonnage, "the amount of a ship's enclosed space.
It is a measure of volume, not weight, and is expressed in units of 100
cubic feet ... .  A ship of 5000 gross tons has 500,000 cubic feet ... of
enclosed space.  Passenger ships are usually measured in terms of gross
tonnage."

Jeff

-=-=-=-=-
Jeff Renner in Ann Arbor, Michigan USA, c/o nerenner at umich.edu
"One never knows, do one?"  Fats Waller, American Musician, 1904-1943. 



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