Gross tonnage

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Anitaahamilton
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Gross tonnage

Post by Anitaahamilton »

How do I find out the Gross Tonnage for our Westerly Oceanlord? Is there any official document or web site or anything where this is given? The Westerly book and the information on this site gives only the displacement. Thanks, Anita Hamilton, Timshel.
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Re: Gross tonnage

Post by aquaplane »

The displacement is the useful information for a boat owner.

The tonnage is the number of tons (a size of barrel ) which will fit in a cargo vessel, not really useful for us.

Or something like that, it doesn't really matter.
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Re: Gross tonnage

Post by Anitaahamilton »

Yes I know Gross Tonnage is a volumetric measure (related to barrels of wine you can carry?) but it is this number that is required for the official form for entry to Galapagos so it does matter to me.
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Re: Gross tonnage

Post by philipstevens »

I found this DIY GRT calculation video on youtube.
https://www.google.co.uk/url?sa=t&rct=j ... bs.1,d.bGg

https://www.youtube.com/watch?v=7Bn-kYJAqg4

(not sure which will work)

and also this on Wiki, but think the video is easier to understand
https://en.wikipedia.org/wiki/Gross_tonnage
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Re: Gross tonnage

Post by Anitaahamilton »

Thank you. That certainly gives a way to work out a figure without paying £145 or more to RYA or a surveyor. Amazing what you find on u tube!
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Re: Gross tonnage

Post by TyroSailor »

I bet someone at Trafalgar Yacht Services knows. Or can look it up.
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boz1947
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Re: Gross tonnage

Post by boz1947 »

The Gross tonnage of my Corsair MkII, not disimilar to the OceanLord is printed on the registration plate as 13 and 27/100

probably near enough for goverment work ..... :D
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Re: Gross tonnage

Post by FulmarOnia »

..and my Corsair Mark 2 is 12.5, so it's clearly far from an exact science ! Suggest that 14 would about do it for an Oceanlord, or make it a precise figure such as 14 and 23 hundredths, after all the officials aren't going to measure it are they !
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Re: Gross tonnage

Post by Anitaahamilton »

Thank you. Dubois naval architects say 15.5, so we will go with that. All in the same ballpark though.
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