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Beira 1930s

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Beira			ER de Lisboa		1910	1910	survey ship 1936
Ibo			ER de Lisboa		1911	1911	survey ship 1948
Mandovi			ER de Lisboa		1917	1917	survey ship 1945
Bengo			ER de Lisboa		1917	1917	discarded 1933
Quanza			ER de Lisboa		1917	1917	discarded 1933

Technical data

Displacement standard, t	397
Displacement full, t	492
Length, m	45.0
Breadth, m	8.30
Draught, m	2.10
No of shafts	2
Machinery	Beira, Ibo: 2 VTE, 2 cylindrical boilers Mandovi, Bengo, Quanza: 2 VTE, 2 Yarrow boilers
Power, h. p.	700
Max speed, kts	13
Fuel, t	coal 85
Endurance, nm(kts)	3200(9)
Armament	2 x 1 - 47/40 H(tr)47/43
Complement	51

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Project history

Small colonial gunboats, built at Lisbon. Ships of first series had cylindrical boilers, following had Yarrow boilers. Ships of first two series were repeatedly rearmed.

Modernizations

1917-1920, Beira: + 1 x 1 - 87/21 K.87/24, 1 x 1 - 65/40 H(tr)65/40

1917-1920, Ibo, Mandovi: + 1 x 1 - 76/40 A(tr)76/40, 2 x 1 - 57/40 H(tr)57/43

1917-1920, Bengo: + 1 x 1 - 87/21 K.87/24, 2 x 1 - 47/40 H(tr)47/43

1917-1920, Quanza: - 2 x 1 - 47/40; + 2 x 1 - 76/40 A(tr)76/40

early 1930s, Ibo: - 1 x 1 - 76/40, 2 x 1 - 57/40; + 2 x 1 - 76/50 Mk 2.3.5

early 1930s, Mandovi: - 1 x 1 - 76/40, 2 x 1 - 57/40; + 2 x 1 - 47/40 H(tr)47/43

Naval service

Beira in 1936 was converted to survey vessel, after war also Mandovi (in 1945) and Ibo (in 1948) were so converted.