Understanding a Boat Number

[Perplexed]

My boat is an Etap, built in the middle of the total production, in Belgium

In the cabin is a metal plate with the following engraved on it.....

O. N. 703727 R. T..3 55/100 The last 5 characters are written as a fraction

Now cleaned and restored to its bright copper appearance it looks beautiful. I would love to understand all the inforation on it.

Is anyone able to decrypt the information, or suggest where to go for help, please?

A simp;e ssearch on Google has not given any help, and as there is not a class association that too is a closed door.

Many Thanks

 

[Tranona]

That is the plate recording the registration on the British register, which has probably lapsed if you did not register the change of ownership and renew it when you bought the boat.

Official Number 703727 Registered Tonnage 3 55/100 tons

The tonnage is a measure of the carrying capacity of the boat in terms of wine barrels (tuns) as is largely irrelevant for yachts but for ships it is used as a basis for such things as light dues and port charges. Each boat is measured individually by an MCA approved surveyor when the boat is first registered.

The figure bears no direct relationship to the weight (displacement) of the boat.

 

[Perplexed]

That is the plate recording the registration on the British register, which has probably lapsed if you did not register the change of ownership and renew it when you bought the boat.

Official Number 703727 Registered Tonnage 3 55/100 tons

The tonnage is a measure of the carrying capacity of the boat in terms of wine barrels (tuns) as is largely irrelevant for yachts but for ships it is used as a basis for such things as light dues and port charges. Each boat is measured individually by an MCA approved surveyor when the boat is first registered.

The figure bears no direct relationship to the weight (displacement) of the boat.

Thank you so much! I didn't think the plate was a British Registration. And as for the Tuns...isn't it amazing how we Brits hang on to things from the past. Now, about the tuns of wine, ...I think I shall have to work on that!! Mind you, the mechanic who does work on the boat for me from time to time is always paid in bottles of Port!! Maybe that is where he got the idea from. John