Niterói-class frigate

|builders=

|builders=

*[[Vosper Thornycroft]]

*[[Vosper Thornycroft]]

*[[Arsenal de Marinha do Rio de Janeiro]]

*[[Rio de Janeiro Navy Arsenal]]

|operators={{naval|Brazil}}

|operators={{naval|Brazil}}

|class_before=

|class_before=

}}

}}

}}

}}

The '''''Niterói'' class''' is a series of [[frigate]]s of the [[Brazilian Navy]] built by [[Vosper Thornycroft]] of the United Kingdom and [[Arsenal de Marinha do Rio de Janeiro]] based on the [[Type 21 frigate|Type 21]] frigates.

The '''''Niterói'' class''' is a series of [[frigate]]s of the [[Brazilian Navy]] built by [[Vosper Thornycroft]] of the United Kingdom and the [[Rio de Janeiro Navy Arsenal]] based on the [[Type 21 frigate|Type 21]] frigates.

== History ==

== History ==

These frigates were designated the Mk 10 by Vosper Thornycroft and are the largest of a series of ships built by that shipyard for both foreign buyers and the Royal Navy. All of them were extensively modernized between 1996 and 2005 under the 'ModFrag' program. The projected completion was 2001, but due to lack of funds and [[sea trial]]s to verify the new software, the entire program had been slipped to 2005.{{Citation needed|date=September 2025}}

These frigates were designated the Mk 10 by Vosper Thornycroft and are the largest of a series of ships built by that shipyard for both foreign buyers and the Royal Navy. All of them were extensively modernized between 1996 and 2005 under the 'ModFrag' program. The projected completion was 2001, but due to lack of funds and [[sea trial]]s to verify the new software, the entire program had been slipped to 2005.{{Citation needed|date=September 2025}}

A total of six ships were built. Two of the anti-submarines (ASW) and both of the general purpose (GP) version were built in England. The remaining two ASW ships were built at the Arsenal da Marinha in Rio de Janeiro with assistance from VT. The ASW ships had an [[Ikara (missile)|Ikara]] missile launcher in Y position aft of the flight deck. This was removed as part of the modernisation programme. The GP ships had a second {{convert|4.5|in|mm|adj=on|0}} gun in "Y" position. A seventh ship was built as the navy's main training unit. The ship is identical to the other ships of the class, but is not fitted with weapons or sensors.{{Citation needed|date=September 2025}}

A total of six ships were built. Two of the anti-submarines (ASW) and both of the general purpose (GP) version were built in England. The remaining two ASW ships were built at the Navy Arsenal in Rio de Janeiro with assistance from VT. The ASW ships had an [[Ikara (missile)|Ikara]] missile launcher in Y position aft of the flight deck. This was removed as part of the modernisation programme. The GP ships had a second {{convert|4.5|in|mm|adj=on|0}} gun in "Y" position. A seventh ship was built as the navy's main training unit. The ship is identical to the other ships of the class, but is not fitted with weapons or sensors.{{Citation needed|date=September 2025}}

From 2025, the class will be gradually replaced in "first-rank" roles by the newest {{sclass|Tamandaré|frigate|0}} frigates, the survivors will be revitalized and transferred to patrol duties in the fleet.{{Cite news|url=https://www.naval.com.br/blog/2019/05/31/akaer-revitalizara-consoles-do-sistema-siconta-mkii-mod-1-de-tres-fragatas-classe-niteroi|title=Akaer revitalizará consoles do sistema SICONTA MkII Mod. 1 de três fragatas classe Niterói|date=31 May 2019|website=Poder Naval|language=pt}}

From 2025, the class will be gradually replaced in "first-rank" roles by the newest {{sclass|Tamandaré|frigate|0}} frigates, the survivors will be revitalized and transferred to patrol duties in the fleet.{{Cite news|url=https://www.naval.com.br/blog/2019/05/31/akaer-revitalizara-consoles-do-sistema-siconta-mkii-mod-1-de-tres-fragatas-classe-niteroi|title=Akaer revitalizará consoles do sistema SICONTA MkII Mod. 1 de três fragatas classe Niterói|date=31 May 2019|website=Poder Naval|language=pt}}

|{{ship|Brazilian frigate|Independência|F44|2}}

|{{ship|Brazilian frigate|Independência|F44|2}}

|F44

|F44

|rowspan=3|[[Arsenal de Marinha do Rio de Janeiro]]

|rowspan=3|[[Rio de Janeiro Navy Arsenal]]

|ASW

|ASW

|11 June 1972

|11 June 1972