ASubmarines
FORCETALLY
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ASubmarines
At a glance
Italian submarine Primo Longobardo (S 524)larger figure on 2 of 2
Shallow Water Combat Submersiblelarger figure on 0 of 2
Measured figures
Length
Single source66 m (216.5 ft)[source]
Length
Single sourceConfiguration
| Specification | Italian submarine Primo Longobardo (S 524) | Shallow Water Combat Submersible |
|---|---|---|
| Power | 3-shaft diesel Grandi Motori Trieste GMT 210.16-NM (2,7 mW) 1 electric engine ABB[source] | — |
| Name | Primo Longobardo[source] | — |
| Namesake | Primo Longobardo[source] | — |
| Builder | Fincantieri , Monfalcone[source] | — |
| Laid down | 19 December 1991[source] | — |
| Launched |
Counts only measures both sources give with the same scope. A larger figure is not a better system.
6.8 meters (22 ft)[source]
at 12 knots (22 km/h; 14 mph)
Single source2,500 nmi (4,600 km; 2,900 mi) at 12 knots (22 km/h; 14 mph)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
20 June 1992[source] |
| — |
| Commissioned | 14 December 1993[source] | — |
|---|
| Home port | La Spezia[source] | — |
|---|
| Identification | Pennant number : S 524[source] | — |
|---|
| Status | Active[source] | — |
|---|
| Class & type | Sauro -class submarine[source] | — |
|---|
| Depth | 300 m (984.3 ft)[source] | — |
|---|
| Sensors & processing systems | 1 x radar SMA MM/BPS 704-V2 1 x sonar STN Atlas Elektronik – ISUS 90-20 Combat System STN Atlas Elektronik – ISUS 90-20 periscopes Kollmorgen communication system IRSC, by Hagenuk Marinekommunikation Submarine Action Information System SMA/Datamat MM/SBN-716 SACTIS periscopes Barr & Stroud CK31 Search and CH81 Attack Periscopes communication system by ELMER[source] | Inertial navigation system , high-frequency sonar for obstacle/mine avoidance and navigation, GPS[source] |
|---|
| Electronic warfare & decoys | ESM systems Elettronica Spa, BLD-727[source] | — |
|---|
| Armament | 6 × 533 mm (21 in) torpedo tubes with reloads for: 1.) Black Shark torpedo Mod.3 2.) Naval mines[source] | SEAL team personal weapons, limpet mines[source] |
|---|
| Country of origin | Italy[source] | United States[source]Inventory Origin column; table 2, row 5, cell 2; revision 1373375989; retrieved 2026-09-30 |
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| Used by | Italian Navy[source]Current operator stated in the article; inventory date not specified | — |
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| Builders | — | Teledyne Brown Engineering[source] |
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| Operators | — | United States Navy Royal Navy (planned)[source] |
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| Preceded by | — | SEAL Delivery Vehicle[source] |
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| Cost | — | $383 million (program cost)[source] |
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| On order | — | 7 USN, 3 RN[source] |
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| Building | — |
|---|
| Completed | — |
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| Type | — | Submersible , diver propulsion vehicle[source] |
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| Propulsion | — | Lithium-ion batteries powering electric motors[source] |
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| Test depth | — | >190 feet (58 m)[source] |
|---|