View source for EOC 16 inch/45 Mark I naval gun (1911)

[[File:EOC 16 inch 45 cal 1911 .png|thumb|EOC 16"/45 naval gun conjectural design.]]

== History ==
By 1908 the Brazilian economy was in trouble and with the advent of the Orion class super-dreadnoughts, the
Brazilian battleships were now outclassed. On 7 May 1910 the head of their naval
commission in Britain asked Armstrong to stop work on the third ship and to develop
designs for a more powerful ship.¹ The Design 684 was proposed to have as Main battery eight 16"/45 in twin turrets mounted on the Centerline. Guns of this caliber had not yet been adopted by any navy when it was proposed by Armstrong. No prototypes were made for this gun.   

{| class="wikitable"
|+ Gun Characteristics
! Designation
| EOC 16"/45 (40.6 cm) Mark I 
|-
! Date of Design
| 1911
|-
! Date of Service
| None Built
|-
! Gun Weight
| N/A
|-
! Gun Length Overall
| 18.8976 m(744 in) <small>estimated<small>
|-
! Bore Length
| 18.288 m(720 in) <small>estimated<small>
|-
! Rifling Length
| 14.8336 m(584 in) <small>estimated<small> 
|-
! Rate of Fire
| N/A
|}

== Used on ==

* Armstrong First class Battleship Design Nº 684 to 686
== See also ==
[¹] From the book "The British Battleships 1906-1946" by Norman Friedman
[[Category: Components]]
[[Category: Gun mountings]]
[[Category: Royal Navy components]]