Joe, what size pieces of wood are you using, do you want that to be 16 feet down the center, the outside or the inside, and what's the distance from the center of the circle to the 16-foot line you want to establish?  (No, I'm not a carrier guy -- that's why I have to ask about line lengths!)

I'll dump the trigonometric calculations on you if you want, but I suspect you just want the numbers.

For a 5' wide deck with 60'0" radius for a center line, that would make the outside radius 62'6", and the inside radius 57'6". That's 690" inside radius, 750" outside radius. That ratio is .92. This means the inside edge length is .92 times the outside edge length. If the outside edge of the plywood is 48", the inside edge should be 44.16". This would mean you need to cut a 1.92" wide wedge off of each side. I'd say since the deck will be so short, just cut a 2" wedge off of each sheet of a 5' wide piece of plywood and call it good. If you can tolerate the deck only being 4 feet wide, use the plywood "long ways" instead of "wide ways". That would only take 2 sheets of plywood instead of four. You would cut a 3" wedge off each end so that one edge is 96" and the other edge is 90". Again, not micrometer perfect, but close enough.
(Actually you would only need to cut one edge of each piece. There would be no need to cut the bow edge or the stern edge, only the joint in the middle.)

Making a 5-foot wide deck with American 4 x 8 building material will generate a lot of offal.

I often generate a lot of "awful" when my saw meets plywood.

5-foot is an inconvenient width.

When I helped Melvin build the deck for the NATS many years ago, we did the construction in his front yard.   We staked the tape at one end and run it out to get the 60 foot mark.   We made a little arc I think or maybe we laid the first sheet of ply down and centered it along the flight path of a circle.   We then marked the ply for the angle cut.   All the rest were marked using this one  sheet of ply.   I know it was a long day and Melvin painted the deck by his self after all the construction  was done.   1 X 4's were used for the framing.  Every other one of the sheets had the framing inset so when turned over the previous sheet would nestle in side.   Little square boxes wore also put in the open areas to keep the ply from sagging and storage of sand bags.  Also all the hardware was supposed to be in the storage boxes.   When all was stacked properly the deck was just a little over half the depth of just stacking the panels on top of each other.   I last time I seen the deck I couldn't believe how it had been treated during storage.  Don't know if Melvin still has the drawings or not.

PS: I too have looked at the carrier set up for the British deck.    Looks very interesting as to me it is more like a real deck.   The surface of the deck is higher from the grass.   They are able to start the engines on the deck for launch without bending/stooping over.   Also only four lines to attend to after a landing.   Granted the landing may be a little rougher then the US deck.   But it is smaller which mean less materials and I thing they say it can be set up by one person.   I also think they use 5 gallon buckets to set the deck on.   

Check out the site:          www.carrier-deck.com         .

Here is how the Aussies build a deck. No expense spared and built buy a cabinet maker!    Mike

www.http://clamf.aerosports.net.au/   

Thanks for all the help guys!  Here is the deck I just finished. 5 foot wide, 16 feet long.
Joe