Ships of the French Arm

[Carcosa]

Just bought this pdf, seems like an older book, but even so I was a little disappointed.

None of the ships have a given volume as Traveller tons, but instead have a mass and not sure how to convert.

Also none of the ships seem to have artificial gravity measures such as rotational pods... did they just assume gravity exists on ships like star treck or firefly? Because of this second point i dont think i can use this book, I mean not even any deck plans are included...

Any suggestions where to find some usable 2300ad ships with deckplans and artificial grav technology as well as volume given in tonnage?

 

[McPerth]

Ships of the french arm is a book for the old classic 2300AD, whose system was quite different to Traveller, and that did not use tons as tonnage. As such, the ships are designed according thos rules, quite differnt from traveller's.

 

[aramis]

Colin's working on a MGT version.

That said, until then, you can use a rough guideline of 10 metric tons to the displacement ton, then see if you can fit the equipment and performance in using the MGT2300 design system.

 

[Kilgs]

Any suggestions where to find some usable 2300ad ships with deckplans and artificial grav technology as well as volume given in tonnage?

Deckplans for 2300 type ships are very difficult to come by due to the 3D layouts. I recommend taking a look at Etranger website.

Also the Jovian Chronicles (Dreampod 9) Mechanical Catalogs have some good deckplans based on particular compartments. Different system but can be used for imagery.

 

[middenface]

What you have is the much older edition. Working out mass to tonnage is I think divide by 3 for civilian vessels and 5 for military vessels.. or something like that.

The 2300AD universe does not have contragrav at all, so any ship without spin habs/hamster cages/rotating hulls etc will have a zero G environment aboard.
Couple of design like the Thorez and Aconit are like this, as they are designed to land on a surface for example.

The newer edition 2300AD uses the Mongoose Traveller Core rules has everything you need. I know as I drew the deckplans, like the Kennedy, which has spin habitats.
The design system covers all the various modes of generating gravity.

A newer Ships of the French Arm is being worked on.

Argh, missed the replies. OOps

 

[BMonnery]

In TNE, where they had this issue, 10 metric tons = 1 displacement ton.

 

[Kilgs]

In the real world, a Nautical Displacement Ton is 1m^3.
A Register Ton is 2.832m^3.
A standard Displacement Ton is 0.991m^3

Traveller uses 490ft^3 as 1 Displacement ton. It's based on the displacement weight/mass of Hydrogen, I believe.

(This means divide all Traveller dtons by 14 to get standard displacement. Or multiply standard by 14 to get Traveller dtons.)

 

[aramis]

In the real world, a Nautical Displacement Ton is 1m^3.
A Register Ton is 2.832m^3.
A standard Displacement Ton is 0.991m^3

Traveller uses 490ft^3 as 1 Displacement ton. It's based on the displacement weight/mass of Hydrogen, I believe.

(This means divide all Traveller dtons by 14 to get standard displacement. Or multiply standard by 14 to get Traveller dtons.)

A real world displacement ton is NOT 1 cubic meter of vessel (excepting submarines) - typically, it's 3-5 cubic meters of surface ship, but can be up to 10 cubic meters for certain freighters.

It is, however, defined by regulations as 35 cubic feet... about 0.991 cubic meters... at waterline. (According to Rowlette's Dictionary of Units)

Rowlett also notes the freight ton of either 40 (US) or 42 (UK) Cubic feet, or sometimes 1000 kg.

And notes the Registry Ton is 100 cubic feet, which is about 2.83168 cubic meters ... (which can be 0.2Td (in GURPS), 0.202Td in CT, TNE, T4, and T20, and 0.2097 or so in MT and T5.)

GURPS 5 short tons per Td is a direct lift from Registry Tonnage.

 

[Kilgs]

Damnit! I spent like a week trying to make sense of all those damn differences and now I've got it wrong... Grrr.

Hmm, I wonder if my 1m^3 is rounded up 0.991 like my 2.832 is a rounded up 2.82168 (yours)...

So irritating. I had to monkey around with all of that stuff because Jovian Chronicles vessels don't use weight or displacement. They use m^3 for cargo and everything else. Made it a pain to try and figure out the equation for stutterwarp speeds. And I tried to use it to create a trading system but started to pull my hair out.