I think Argentina is very underrated, and IMHO it seemed to get less powerful with every new supplement. What is clear from core 2300AD is Argentina is a major power with a standing similar to, say, Japan. They're one of the old "big six" that dominated space in the 2100's (France, Britain, Bavaria, America, Japan and Argentina).
They have had some pretty hard times though. Looking for the late 19th analogue, they're the Austria of the Great Powers, clearly in decline (or rather they declined and came back), but still powerful. There is however a strong argument that in fighting the Rio Plata Wars, Argentina burnt through a lot of capital and tantalum, something that has stunted her colonial growth (Argentina-Mexico have only three colonies, although the one on Tirane must be pretty big).
When it comes to fleets, I think we often overstate things. As per canon there are only 660 odd stutterwarp equipped warships (a category that includes fighters), and about half those are French. The sheer quantity of treasure needed for even a moderate fleet sees some pretty big players having some pretty small fleets (esp. Japan).
When it comes to innovation, the Argies seem to be at the head of the curve. They haven't got the vast sums of cash and tantalum to build Battleships and Carriers, but I think they'll know that these vessels are not the optimum fighting ship.
The optimum fighting ship is a well designed smaller destroyer, and I can see Argentina abandoning the "me too" approach, and in fact simplifying down to a few smaller types that can be produced in more quantity, being essentially optimised ship killers designed to work off a logistics supply.
The Piedra Buena would be an earlier example of the type, but IMC this vessel was the Espora.
(repost from
http://games.groups.yahoo.com/group/etranger/message/8262 )
Argentine Piedra Buena and Espora class Frigates
Design Date: 2272
First Example Laid Down: 2272
First Example Completed: 2274
Fleets in Service: Argentina
Number in Service: unknown
The Piedra Buena class was designed as a nuclear
powered raider frigate, but due to the pressures of
the war was completed as an MHD powered vessel.
The Piedra Buena replaced the 20MW fission plant with
a 10MW MHD Turbine, a 2MW solar array (for insystem
cruising) and 1000 tons of fuel. It also has an
attachment point for a fuel tank carrying 7000 tons of
fuel which can be dropped (the tanks cost MLv5.5
each). Normal proceedure was to drop the tank outside
of the FTL shelf, operate insystem, and RV on the way
out, topping of its internal tanks.
Weapons are all facing forward, which caused problems
in battle, as faster vessels could outmaneuver them
and get "on their six". The PB's main long ranged
firepower is 8 EM-5 series missiles. In the later war
period the vulnerable drone was often replaced with a
fighter craft.
Post war, the original design was reverted to, with a
20MW fission plant. This faster vessel is more capable
but more expensive. The first vessel of this type was
the Espora.
Performance
Warp efficiency: Piedra Buena: 0.7 (loaded, with drop
tank), 1.31 (loaded, sans drop tank) or 1.42
(unloaded). Espora: 2.39
Power Plant: 10MW MHD Turbine (PB) or 20MW fission
(Espora)
Fuel: PB: 1000 tons internal, 7000 in drop tank
Range: 7.7 light years
Mass: PB: 2,223.9 tons (unloaded, sans drop tank),
7,330 tons drop tank. Espora: 2,236.7 tons (unloaded)
Cargo Capacity: 1,885 cubic meters
Crew: 56 (18 Bridge, 7 TAC, 16 Engineering, 10 troops,
3 stewards, 2 medical);
Passengers: none
Comfort: 0;
Emergency Power: 1 week
Total Life Support: 56 for 180 days
Cost: MLv17.223 (PB) or 24.323 (Espora), exclusive of
small craft or ordnance
Ship Status Sheet
Move: 2/3 or 6
Screens: none
Radiated Signature: 3(4) or 4(5)
Radial Reflected: 6
Lateral Reflected: 6
Target Computer: +1;
Radial Profile: 0
Lateral Profile: 0
Armour: 1
Hull hits: 36/18/9
Power Plant Hits: 40/8 or 26/6
Active: 7 or 10
Passive: 3 or 10
Other: 2MW solar array, 1 sling
Weapons
1 x3-2dbl PBWS in masked turret (1278)
2 x1dbl lasers in jack turrets (2x 128)
Ordnance Load
8 EM-5D missiles in 2 bays
Vehicles
1 Sling (normally carries a sensor drone, but
sometimes carried fighters or landers)
Sensors and Electronics:
Phased Active-7 or 10
Spherical Passive-3 or 10
Navigation Radar
DSS
Gravitational
3 Fire Control Radars (TTAs)
Crew Hits:
Bridge: Captain, Navigator, Helm, 2 Communications,
4 Computer
TAC: 3 Fire Control, 2 Remote Pilot, Phased Active
Operator, Spherical Passive Operator
Damage Control: 13 (plus 9 spares from bridge)