Data board ????

[Marja Dijkstra]

In our Mac 27 there is board with this data. Can anyone tell me what it is/means? 

[Bob & Freddy Tuffnell]

That was the identity plaque for British ships Registration. (Now replaced by the SSR registration for the UK)

ON was the “Official Number”, and RT is theRegistered Tonnage which is a calculation of how many “tonnes” could be carried under the deck. Wood barrels, were used for packaging for most cargo transported by ships, long before the 40 foot steel containers were invented.  The word is derived from the French “tonneau”. It has nothing to do with the actual weight, or displacement of the boat.

 

[Peter Lloyd]

Do you have the ships original papers? As Bob has explained they will have had the same reference numbers. However, you may have some additional numbers if registered outside uk.

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