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Date Posted: 23:36:43 11/09/16 Wed
Author: AvM
Subject: Re: Vasco da Gama, 1841
In reply to: Albert Parker 's message, "Re: Vasco da Gama, 1841" on 22:00:21 11/09/16 Wed

>1,829 tons, even metric tonnes, is much too small a
>displacement for a ship with a 60-meter+ keel. That's
>the displacement of a British or French 60-gun
>two-decker of the early 18th century (or mid-18th
>century, i.e., 1750s, in the British case). French
>three-deckers of the early 19th century had gun decks
>of 200 feet and displaced around 5,000 tonnes. (The
>British long ton, the French tonneau, and the metric
>tonne are all about the same, the tonneau being 978.78
>kg and the British ton being 1,016.06 kg). I have no
>idea what the Portuguese burthen formula was.

Something is perheps wrong

D: JOAO VI launched 1876 according to Tres Seculos
length pp 60.00m x16.68 x 14.025
3206 tonnage (metric tons)

O'Ramos listed vdG with 2262bm tons

I have an official list of the Portuguese Navy of c.1870
VDG 2261,721 m3 draught 22ft fwd 24ft aft
DON FERNANDO 1406,272 m3 19ft / 21ft

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