fighting ships of the world



SANTA CRUZ submarines (1984-1985)

Santa Cruz 1990

Name No Yard No Builder Laid down Launched Comm Fate
Santa Cruz S41 463 Thyssen Nordseewerke, Emden, West Germany 6/12/1980 28/9/1982 14/12/1984 in service (2019)
San Juan S42 465 Thyssen Nordseewerke, Emden, West Germany 18/3/1982 20/6/1983 18/11/1985 lost 15/11/2017
Santa Fé S43   Thyssen Nordseewerke, Emden, West Germany // Domecq García Yd, Buenos Aires 4/10/1983 --- --- suspended 1986
Santiago del Estero S44   Thyssen Nordseewerke, Emden, West Germany // Domecq García Yd, Buenos Aires 5/8/1985 --- --- suspended 1986


Displacement standard, t


Displacement normal, t

2150 / 2356

Length, m


Breadth, m


Draught, m


No of shafts



4 MTU 16V652 MB80 diesel-generators, 1 Siemens electric motor

Power, h. p.

6720 / 8980

Max speed, kts

15 / 25

Fuel, t

diesel oil 319

Endurance, nm (kts)

14000(8) / 460(6)


6 - 533 TT (bow, 22)


Calypso IV radar, CSU-3/4 sonar suite, DUUX-5 sonar, Sea Sentry III ECM suite, SINBADS CCS



Diving depth operational, m



Ship project history: Contracted on 30 November 1977. Initially Argentina was to acquire four Type 1700s and two TR 1400s (a smaller version), but in 1982 the order was changed to six of the larger type. First two German-built boats completed and delivered in 1984-85, while other two being built in Argentina (from 80%-prefabricated German-built parts) were suspended pending funding and in 1986 permission was given by German partner to sell all these submarines to a third country, but buyer was not found. Their building readiness was 52% for S43 and 30% for S44 in 1994. Planned building of S45 and S46 was never begun. These are very advanced and fast diesel-electric submarines. Fitted with torpedo auto-reload system allowing the reloading of the torpedo tubes in 50 seconds. Endurance is 30 days.

Modernizations: None.

Naval service: San Juan was lost 15/11/2017 off South Atlantic coast of Argentina by unknown cause.

Santa Cruz 2002

Many thanks to Wolfgang Stöhr for additional information on this page.

Ivan Gogin, 2017-19