Tonnage board

[Observer]

I've seen nice tonnage boards on some boats made up in teak or similar hardwood - probably about 18" long by 4" high - with the official number and tonnage engraved. Can anybody provide details of somebody who produces this style and will turn round an order quickly?

Thanks.



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[ccscott49]

I think Nauticalia do one, but vetus also do.

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[vyv_cox]

Part 1: update required

They are provided with a Part 1 registration. It's supposed to be permanently attached to the 'main beam', largely an item not found in the moden GRP boat. The boat's name should be permanently attached to the transom, e.g. by welding. The tonnage is 'Thames' which, believe it or not, is the weight of wool that will fit the internal volume of the boat!

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[vyv_cox]

Part 1: update required

They are provided with a Part 1 registration. It's supposed to be permanently attached to the 'main beam', largely an item not found in the moden GRP boat. The boat's name should be permanently attached to the transom, e.g. by welding. The tonnage is 'Thames' which, believe it or not, is the weight of wool that will fit the internal volume of the boat!

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[vyv_cox]

Part 1: update required

They are provided with a Part 1 registration. It's supposed to be permanently attached to the 'main beam', largely an item not found in the moden GRP boat. The boat's name should be permanently attached to the transom, e.g. by welding. The tonnage is 'Thames' which, believe it or not, is the weight of wool that will fit the internal volume of the boat!

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[vyv_cox]

Part 1: update required/

They are provided with a Part 1 registration. It's supposed to be permanently attached to the 'main beam', largely an item not found in the moden GRP boat. The boat's name should be permanently attached to the transom, e.g. by welding. The tonnage is 'Thames' which, believe it or not, is the weight of wool that will fit the internal volume of the boat!

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[vyv_cox]

Part 1: update required/

They are provided with a Part 1 registration. It's supposed to be permanently attached to the 'main beam', largely an item not found in the moden GRP boat. The boat's name should be permanently attached to the transom, e.g. by welding. The tonnage is 'Thames' which, believe it or not, is the weight of wool that will fit the internal volume of the boat!

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[vyv_cox]

Part 1: update required?

They are provided with a Part 1 registration. It's supposed to be permanently attached to the 'main beam', largely an item not found in the moden GRP boat. The boat's name should be permanently attached to the transom, e.g. by welding. The tonnage is 'Thames' which, believe it or not, is the weight of wool that will fit the internal volume of the boat!

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[vyv_cox]

Apologies

for the multiple entries. I'm typing with one hand only as a result of a hand operation on Tuesday. I find that mistaking 'shift' for 'enter' in the title causes the multiple entries and this is a mistake that I am making very frequently.

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[Observer]

Re: Apologies

Actually I thought it was a stutter.

Thanks for the response and I was interested to learn about the "weight of wool" origin for tonnage measurement. However, the tonnage board is not supplied by the Shipping Registry; it has to be purchased separately.

Nauiticalia (mentioned above) will do them in brass and I have found a company who will do them in plastic laminate. I was really interested in finding a supplier who will do one in teak. Thanks anyway.

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[Twister_Ken]

Craft fair

Obs,

Almost any craft fair will have one or more wood turners and carvers. You could try approaching one of them with a sketch of what you wanted to get a bespoke job done (maybe in some exotic timber!)

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[Twister_Ken]

Edit/delete

The edit function that works on your own posts also allows you to delete. Unfortunately, it only works for one hour afer first posting!

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[Cornishman]

Re: Part 1: update required?

Are you sure about that definition of Thames tonnage? As I understand it the word ton is derived from TUN, a cask used in the wine trade and the size of a ship used to be judged by the number of tuns that could be stowed in the holds.
Thames tonnage was a formula devised by The Royal Thames Yacht Club in the 19th centuy for handicapping yachts and is properly known as Thames Measurement. The formula used only Length Between Perpendiculars (LBP) and the Beam. (LBP-Beam)xBeamx1/2 Beam divided by 94!
It is Net Registered Tonnage which was carved on the main beam and is derived by calculating the capacity of the hull divided by 100 and then deducting crew quarters, engine room, bosun's stores and other areas necessary for running the ship. It was to be found next to the ship's Official Number.

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[gtmoore]

Re: Apologies

I've done this myself when not paying attention. I changed the preview post screen option to on in User Options so now the preview is displayed instead of a post.

Hope the hand is better soon

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[stephenh]

I agree with Cornishman, however to get the Official Tonnage you need to get the boat measured by an Official Measurer (back in the 60s in Chichester it was the local yacht surveyor with a different hat on) and have the Official Certificate to prove this.
On a wooden boat we would carve the individual tonnages on the beams above the relevant spaces as Cornishman says, charts, stores, engine etc.

A clever surveyor could measure these in such a way that the Official Tonnage figure was very low; the reason for this was that harbour dues were levied in proportion to the Nett Tonnage. Our local measurer said that it was technically possible to come out with a negative tonnage which in theory meant that harbour masters would pay you to enter their harbour!!!!
On another note it is easy to carve lettering these days with a Dremel - give it a go..

good luck Stephen

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[vyv_cox]

Re: Part 1: update required?

Well, we agree that it is a measure of capacity. I was quoting the measurer of my boat, who told me the wool story. The 'tuns' theory appears to be no more than that.

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[NigeCh]

Re: Part 1: update required?

http://old.cruisingworld.com/forums/matt_boards/cwswbb31/messages/399.html



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[Cornishman]

Re: Part 1: update required?

See: Cruising Under Sail, Part 1, Chapter 1 by Eric C Hiscock

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[vyv_cox]

Re: Part 1: update required?

Some very interesting stuff on the derivation of 'tonnage can be seen at http://pc-78-120.udac.se:8001/WWW/N...em to rule them out. <hr width=100% size=1>

 

[NigeCh]

More info re wine barrels

http://www.theyachtreport.com/PROJECT/Papers2001/charles rahn.pdf

An extract from which says:

"HISTORY
In the 13th century wine was carried in casks that were called tuns. This word originated from the Latin Tunna, which means barrel. These casks held 252 gallons of wine, which weighed approximately 2240 pounds (equivalent to a modern day long ton ). The tuns occupied approximately 42 cubic feet. Over time, the term Tunnage was used to indicate the carrying capacity of a ship's hold. This way a person buying, or chartering a vessel knew exactly how many tuns of wine could be carried by the ship. As early as 1423 King Henry V of England decreed that ships would be taxed by the amount of tuns carried. In the later part of the 17th century in an effort to deal with the taxation of cargo other than wine in casks, dues were assessed on the approximate deadweight of the ship. Various methods were used to determine the deadweight of a vessel including loading the ship with a known amount of iron or lead and applying a freeboard mark. The British Parliament enacted a law in 1720 which applied a formula known as the Builders Old Measurement Rule. The formula used to determine the carrying capacity of vessels remained in use until 1835 .... "

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