ARA Tucuman (BC-1914 (rebuilt 1934-36))


Return to Argentine Ships

The ex German battlecruiser Derfflinger arrived in Argentinian waters in 1920 and in a moving ceremony the ship was renamed Tucuman after one of the Argentine provinces. This ship more than some of the others was exactly what the Argentinians wanted, fast, powerful, well armoured and as shown in WW1 the ship was from the best battlecruiser class of WW1. This is also one of my personal favourite ships.


Displacement 26,600 tons std, 31,200 full load
Length 689ft
Breadth 95.5 ft
Draught 29.5 ft
Machinery 4 shaft Steam Turbines 76,000shp
Speed 26.5 knots
Range 5600 miles at 12 knots
Armour 11.8" side, 1.2" deck, 10.8" turrets
Armament 8 x 12" (4x2)

12 x 5.9" (12x1)

6 x 88mm (6x1)

Aircraft nil
Torpedoes 4 x 50cm submerged
Complement 1150

After 12 years of service in the Argentine Navy the ship was taken in hand at the Bahia Blanca Navy yards for its mid-life refurbishment that happened to so many of the WW1 capital ships. Starting with a first class ship, so much was done to the vessel that it reappeared almost unrecognisable from the original ship.


Displacement 28,500 tons std, 34,800 full load
Length 709 ft   (689ft orig)
Breadth 95.5 ft
Draught 29.5 ft
Machinery 4 shaft Steam Turbines 110,000shp
Speed 30 knots
Range 8000 miles at 15 knots
Armour 11.8" side, 5.1" deck, 10.8" turrets
Armament 8 x 12" (4x2)

16 x 88mm (8x2)

28 x 20mm (4x4 12x1)

Aircraft nil
Torpedoes nil
Complement 1350

The refurbishment started at the bow where a new 'Atlantic' bow was fitted to aid seakeeping and extended the length of the ship. The gun deck of casemate 5.9" were completely removed and plated over. The old superstructures, funnels and deck armour were removed, which allowed access for removal and replacement of the propulsion systems. New AA guns and directors were fitted into the new fore and aft bridge superstructures. Light AA weaponry kept being added for the rest of the ships life (yet to be ascertained how long that will be).

ex-German ships arriving in Argentinian waters. Derfflinger and Kaiser classes.

ex Derfflinger as she arrived in Argentinian waters in 1920.

Drawings I did using Rurik-2's originals. Unfortunately Rurik-2 uses a non-standard colour scheme which looks rather odd when set against the more modern German drawings.

I have tried more than once to ftransform the Derfflinger into a modern capital ship. Hopefully I have gotten it right this time.

Return to Argentine Ships