Bofors 40 Mk4
The Bofors 40 Mk4 naval gun system is a lightweight multi-purpose naval cannon. It fires programmable Bofors 40 mm 3P all-target ammunition to engage ships, aircraft, anti-ship missiles and shore targets. It is a modern naval version of the Bofors 40 mm L/70.
Bofors 40 Mk4

Sutabania · CC BY-SA 4.0
- Name
- Bofors 40 Mk4
- Field
- naval artillery · Bofors 40 mm · anti-aircraft gun
- Region
- Sweden
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Documentary connections
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Broader Term · outgoing
anti-aircraft gun
Term
No machine-readable source provided. Own work assumed (based on copyright claims).

Broader Term · outgoing
Bofors 40 mm
Term
Wikimedia Commons

Broader Term · outgoing
naval artillery
Term
http://www.hmsbacchante.co.uk/gallery_page_3.htm
Located In · outgoing
Sweden
Place
Documentary evidence
Documentary basis
Authority files
wikidata · Q124571137 · wikipedia · Bofors 40 Mk4
In this article
Overview
Overview
The gun can engage targets in less than 0.5 seconds after warning.
Key facts
Key facts
• Name — Bofors 40 Mk4 • Origin — Sweden • Type — Naval gun • Is Ranged — yes • Is Artillery — yes • Service — 2012–present • Used By — See operators • Designer — BAE Systems AB • Manufacturer — BAE Systems AB • Production Date — 2009–present • Weight — Empty: 2300 kg • Crew — remote controlled with gyro-stabilised local control back-up • Cartridge — 40 × 365 cartridge weight 2.5 kg shell weight 0.975 kg • Caliber — 40 mm • Rate — 300 rounds/min • Velocity — 1012 m/s • Max Range — 12,500 m • Feed — Magazine capacity: 100 ready rounds • Elevation — −20°/+80° • Traverse — 360°
Ammunition
Ammunition
Bofors 40 mm 3P all-target programmable ammunition allows six modes including three proximity fuzing modes. This increases the flexibility and effectiveness of the gun system, which has further reduced the reaction time of the gun and it is possible to choose ammunition mode at the moment of firing, giving it the ability to switch rapidly between surface targets, air targets, and ground targets. Along with the 40 mm 3P, the gun can also fire other Bofors 40 mm L/70 ammunition and has the capability to rapidly switch between ammunition.
Variants
Variants
• Bofors 40 mm Mk 4 L Tridon Mk2: land-based version to install on vehicles such as RMMV HX.
Current users
Current users
• Belgium • Belgian Navy • * • Anti-Submarine Warfare Frigate • Brazil • Brazilian Navy • Maracanã, Mangaratiba and Miramar • Finland • Finnish Navy • * • Japan • Japanese Coast Guard • * • Netherlands • Royal Netherlands Navy • * • Anti-Submarine Warfare Frigate • Sweden • Swedish Navy
Future users
Future users
• Colombia • Colombian Navy • Sigma-class design • United Kingdom • Royal Navy • Type 31 frigate
Definition
Definition
The following is established of the heading itself. It is also recorded that bofors 40 Mk4 is associated with Sweden. Classified as a naval artillery, Bofors 40 mm or anti-aircraft gun.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
- Sweden
Catalogued output
Recorded examples
The following works and productions are recorded by name or by count. The same evidence establishes that birch bark MS / [A.F. Die frühesten und seltensten Denkmale des Holz- und Metallschnittes aus dem vierzehnten und fünfzehnten Jahrhundert nach den Originalen im K. Kupferstich-Cabinet und in der K. Hof- und Staats-Bibliothek in München durch Lichtdruck als Facsimiles reproducirt / mit erlauterndem Text hrsg. Von Dr. Institutional cataloguing adds that al-Nahda dictionary: English-Arabic / compiled by Ismail Mazhar. Revised by Mohammad Badran, I. Institutional cataloguing adds that svapnavāsavadattaṃ / Mahākaviśrībhāsapraṇītaṃ; Ta. Extracts from the Sakaa Thevan Saasteram or Book of Fate / translated from the Tamil language by the Rev.
Text attribution
Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article Bofors 40 Mk4, revision 1371486057 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
reference work
Secondary witnessreference work
Secondary witness
Connections
Knowledge graph
Connections
Each connection was recorded deliberately, with the basis for it kept on the internal record.
Broader subject
1- naval artilleryTerminology
Established from a fact already recorded on a verified source.
Place
1- SwedenPlace
Established from a fact already recorded on a verified source.
Further particulars
Held on the record
Further particulars
Open the remaining particulars
This entry is compiled from 8 catalogued sources across 4 independent registers. The registers consulted are Crossref registry, Wellcome Collection, Wikidata and Wikipedia. Every statement above is held against the register that stated it; where the registers are silent, the entry is silent.
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
Elsewhere in Militaria
6,095 published records in this field, each with its sources named.
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