The three destroyers of the class were built between 1938 and 1943 following a modified Mahan design. This is Mariz de Barros along all his long life. She began using old WW1 guns borrowed from Bahia Cruiser stocks and ended her life as the first Brazilian Navy Guided Missile destroyer:
Here is she as projected:
![[ img ]](https://www.dropbox.com/s/zfjb0ryz80pzn9h/DD_M1_Mariz_e_Barros_PROJECT.png?raw=1)
In 1943 she was finished at the Arsenal de Marinha do Rio de Janeiro with temporary weapons to go to Philadelphia Navy Yard where she will received her final armament:
![[ img ]](https://www.dropbox.com/s/0j8zc4dqsqlrq4p/DD_M1_Mariz_e_Barros_AS_BUILT.png?raw=1)
In 1944 she left Philadelphia Navy Yard with her final armament of four 5 in Mk38 cannons, four 40 mm guns, 10 20 mm guns and four torpedo tubes:
![[ img ]](https://www.dropbox.com/s/n5w7qiac04l90b1/DD_M1_Mariz_e_Barros_1945.png?raw=1)
In 1956 she received new radar and control systems:
![[ img ]](https://www.dropbox.com/s/iqn43mths5q7d6b/DD_D26_Mariz_e_Barros_1956.png?raw=1)
In 1966 she received new radars, a Seacat quadruple mount, two hedegehogs, loose all 20 mm guns, two 40 mm guns and two 5 in cannon:
![[ img ]](https://www.dropbox.com/s/dzlgihpyhf86zeb/DDG_D26_Mariz_e_Barros_1966.png?raw=1)
In 1970 her bridge was reconstructed and loose one 5 in cannon. She was laid up in 1972:
![[ img ]](https://www.dropbox.com/s/4mmgfo161ukb3h0/DDG_D26_Mariz_e_Barros_1970.png?raw=1)
