Italian submarine Guglielmo Marconi (S 521)

	Guglielmo Marconi
History
Italy
Name	Guglielmo Marconi
Namesake	Guglielmo Marconi
Builder	Fincantieri, Monfalcone
Laid down	23 October 1979
Launched	20 September 1980
Commissioned	11 September 1982
Decommissioned	1 October 2003
Homeport	La Spezia
Identification	Pennant number: S 521
Fate	Scrapped Aliaga Turkey 2024
General characteristics
Class & type	Sauro-class submarine
Displacement	1,456 tonnes (surfaced); 1,641 tonnes (submerged);
Length	63.85 m (209.5 ft)
Beam	6.83 m (22.4 ft)
Draught	5.3 m (17.4 ft)
Depth	300 m (984.3 ft)
Propulsion	3-shaft diesel Grandi Motori Trieste GMT 210.16-NM (2,7 mW); 1 electric engine Magneti Marelli (2.686 kW);
Speed	12 knots (22 km/h; 14 mph) (surfaced); 19 knots (35 km/h; 22 mph) (submerged);
Range	2,500 nmi (4,600 km; 2,900 mi) at 12 knots (22 km/h; 14 mph)
Complement	7 officers; 44 enlisted;
Sensors &; processing systems	1 x radar SMA SPS-704; 1 x sonar Elsag-USEA IPD70/S; Submarine Action Information System SMA/Datamat MM/SBN-716 SACTIS; periscopes Barr & Stroud CK31 Search and CH81 Attack Periscopes; communication system by ELMER;
Electronic warfare; & decoys	ESM systems Elettronica Spa, Thetis ELT/124-s and MM-BLD/1
Armament	6 × 533 mm (21 in) torpedo tubes with reloads for:; 1.) Black Shark torpedo ; 2.) Naval mines ;

Last updated December 16, 2025

Guglielmo Marconi (S 521) was a Sauro-class submarine of the Italian Navy.^[1]

Construction and career

Guglielmo Marconi was laid down at Fincantieri Monfalcone Shipyard on 1 July 1976 and launched on 20 October 1979. She was commissioned on 6 November 1982.

She was decommissioned on 30 June 2010. She is currently moored at Quay Sauro Calata San Vito, pier 2, north side in the La Spezia Naval Base.^[2] Gugliemo Marconi was sold for scrap 2023.

Citations

↑ "Navi e Armatori - Approdi di Passione". www.naviearmatori.net. Retrieved 18 May 2021.
↑ "Guglielmo Marconi (S 521) - Google Search". www.google.com. Retrieved 18 May 2021.

External links

Media related to S521 Guglielmo Marconi (submarine, 1982) at Wikimedia Commons

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[1] "Navi e Armatori - Approdi di Passione". www.naviearmatori.net. Retrieved 18 May 2021.

[2] "Guglielmo Marconi (S 521) - Google Search". www.google.com. Retrieved 18 May 2021.

[1]

[2]

History

Guglielmo Marconi




Italy
Name	Guglielmo Marconi
Namesake	Guglielmo Marconi
Builder	Fincantieri, Monfalcone
Laid down	23 October 1979
Launched	20 September 1980
Commissioned	11 September 1982
Decommissioned	1 October 2003
Homeport	La Spezia
Identification	Pennant number: S 521
Fate	Scrapped Aliaga Turkey 2024


General characteristics
Class & type	Sauro-class submarine
Displacement	1,456 tonnes (surfaced) 1,641 tonnes (submerged)
Length	63.85 m (209.5 ft)
Beam	6.83 m (22.4 ft)
Draught	5.3 m (17.4 ft)
Depth	300 m (984.3 ft)
Propulsion	3-shaft diesel Grandi Motori Trieste GMT 210.16-NM (2,7 mW) 1 electric engine Magneti Marelli (2.686 kW)
Speed	12 knots (22 km/h; 14 mph) (surfaced) 19 knots (35 km/h; 22 mph) (submerged)
Range	2,500 nmi (4,600 km; 2,900 mi) at 12 knots (22 km/h; 14 mph)
Complement	7 officers 44 enlisted
Sensors & processing systems	1 x radar SMA SPS-704 1 x sonar Elsag-USEA IPD70/S Submarine Action Information System SMA/Datamat MM/SBN-716 SACTIS periscopes Barr & Stroud CK31 Search and CH81 Attack Periscopes communication system by ELMER
Electronic warfare & decoys	ESM systems Elettronica Spa, Thetis ELT/124-s and MM-BLD/1
Armament	6 × 533 mm (21 in) torpedo tubes with reloads for: 1.) Black Shark torpedo 2.) Naval mines

v t e Sauro-class submarines
Nazario Sauro Carlo Feccia di Cossato Leonardo da Vinci Guglielmo Marconi Salvatore Pelosi Giuliano Prini Primo Longobardo Gianfranco Gazzana Priaroggia
List of submarines of Italy

Italian submarine Guglielmo Marconi (S 521)

Contents

Construction and career

Citations

External links