NAVYPEDIA

Photo

Greenhalgh 1952

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Mariz e Barros	M1, later D26		Arsenal de Marinha, Ilha das Cobras, Rio de Janeiro	5/1937	28.12.1940	11/1943	stricken 8.1972
Marcílio Dias	M2, later D25		Arsenal de Marinha, Ilha das Cobras, Rio de Janeiro	5/1937	20.7.1940	11/1943	stricken 1966
Greenhalgh	M3, later D24		Arsenal de Marinha, Ilha das Cobras, Rio de Janeiro	5/1937	8.7.1941	11/1943	stricken 1966

Technical data

Displacement standard, t	1500
Displacement full, t	2200
Length, m	103.9 pp 108.8 oa
Breadth, m	10.6
Draught, m	3.00
No of shafts	2
Machinery	2 sets General Electric geared steam turbines, 4 Babcock & Wilcox boilers
Power, h. p.	42800
Max speed, kts	36.5
Fuel, t	oil 550
Endurance, nm(kts)	6000(15)
Armament	4 x 1 - 127/38 Mk 12, 2 x 2 - 40/56 Mk 1.2, 4 x 1 - 20/70 Mk 4, 1 x 4 - 533 TT, 4 DCT, 2 DCR
Electronic equipment	QCR-1 sonar
Complement	190

Standard scale images

Graphics

Project history

First Brazilian-built destroyers, known as Greenhalgh or M class. Drawings were developed by means of American experts (on the basis of American destroyer Mahan), considerable part of equipment therefrom was delivered: General Electric turbines, Babcock and Wilcox boilers, Bethlehem guns; fire control system and sonar. Despite it, building went slowly, and ships were commissioned only 6 years after laying. Original design provided 5 single 127mm/38 Mk12 guns, 4 single Oerlikons and 3 quadruple 533mm TTs, but during completion one 127mm gun and two TT mounts have refused in favour of strengthening of antiaircraft and anti-submarine armaments. One main gun placed in completely covered turret mount, remaining guns stood openly.

Modernizations

late 1940s, presumably all: + SPS-4, SPS-6C, Mk 28 radars

1966, Mariz e Barros: - 2 x 1 - 127/38, 4 x 1 - 20/70; + 1 x 4 Sea Cat GWS20 SAM (8 Sea Cat), 2 x 24 - 178 Hedgehog ASWRL

Naval service

No significant events.