Thanks Gardin,
Those are the ones I'm going to use and after searching for my past posts, I think I originally got the link from you. I did find my old calculations for the NCC-1701 Enterprise, which I'll re-post below to provide some contribution to my own thread.
The data below is from my 1975 Star Fleet Technical Manual so it is technically for the Class I Heavy Cruiser, Consitution Class, MK-IX Class, so it should apply to Enterprise NCC-1701, the original.
The margin of error is probably about 20% more likely on the side of too small. (For example if the primary hull is 1m higher that adds almost 1000 tons, and the outer hull line thicknesses are about 0.5m to scale)
Class I Heavy Cruiser, Consitution Class, MK-IX Class
Rounding, I get 15,500 dtons. (1dton = 14 cubic meters here)
Broken down as follows:
(1) Primay hull (saucer) central section (64m radius, 6m high): 5,515 tons; "hemispheres above, below and "bump" on which bridge sits, each about 305 tons;
(2) Secondary Hull (104m long, median radius 13m): 3,944 tons;
(3) Nacelle each (156m long, median radius 8m): 2,240 tons each;
(4) Nacelle Pylon (44m high, by 2m x 10m wide): 63 tons each
(5) Neck connecting primary and secondary hulls (30m long, 8m wide, 32m "high"): 549 tons.
Saladin Class Destroyer
The Class I Destroyer, Saladin Class, MK-VIII Class, Saladin NCC-500 uses the same primary hull, nacelle and neck (which connects the primary hull to the nacelle in this case)
Total rough estimated tonnage: 9,200 tons.
Class I Tug, Ptomely Class
11,500 tons and designed to carry a 200m x 20m rad. container (17,950 tons container)