Never Ending East Coast Quiz - 11A

[Jezlyn]

Not strictly "East Coast", but does anyone know the formula for calculating a yacht's "Thames Tonnage"?

 

[Athene V30]

Now there is a Surveyor's question if ever I saw one.

How about (length -beam) x beam x 1/2 beam all divided by 94. Length and beam need to be in feet.

Now get out to that yard and get your boat in the water! /forums/images/graemlins/laugh.gif

 

[Jezlyn]

Flipper gets the prize! Over to you!

 

[pyrojames]

Ah, but it is length between perpendiculars, not LOA!

 

[Jezlyn]

I gave Flipper the benefit of the doubt. You can fight it out with him if you wish!

 

[pyrojames]

/forums/images/graemlins/smile.gif Oxford Companion to Ships and the Sea, pg 864 "length in feet taken from the forward side of the stem under the bowsprit and measured at deck level to the aft side of the stern post..." Not sure this is actually correct, as other sources indicate that it should be the aft side of the stem and the forward side of the stem post at the water line. Obviously on transomed boats it has little effect, but on someting with a counter, the change in tonnage is large!

 

[Athene V30]

Please, PLEASE ask question number 12.

I can't think of anything suitable!!

/forums/images/graemlins/confused.gif

 

[Jezlyn]

PyroJames, Flipper_K6354 has passed the baton to you!

 

[pyrojames]

Bugger. Now I have to think!

 

[Athene V30]

Snigger!! /forums/images/graemlins/laugh.gif