BNS Roraima (CL-1936)


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Specifically designed as 'Patrol' cruisers, these ships were to trudge up and down the coast of Brazil checking for contraband, people smugglers and all of the other nefarious activities man can do at sea.

The ships were broad for their length of hull to take the triple 6" turrets and also to enable the secondary armament to be the twin 4" turrets which did require a wider hull. These were not to be fast ships and a speed of 28-30 knots was considered satisfactory for their role. The ships excellent AA armament for their size meant they could operate closer to the coast than some of the older classes. Armour was standard except the deck armour which was about an inch thicker than contemporaries. Because of the excellent AA weaponry the ships were kept with the aircraft carriers. The value of the Brazilian carriers required the best escorts.

I designed these originally to be an alternative to the similar sized Arethusa class. Having the two triples, instead of three twins, allowed me to add the two extra twin 4" mountings and making them turrets.


Displacement 7,000 tons std 9,250 tons full load
Length 503 ft
Breadth 66 ft
Draught 22 ft
Machinery 2 shaft steam turbines, 55,000shp
Speed 30 knots
Range 9000 miles at 16 knots
Armour 4" side, 2.5" deck, 3" turrets
Armament 6 x 6" (2x3)
12 x 4" (6x2)
16 x 2pd (1x8, 2x4)
10 x 20mm (10x1)
Aircraft 2
Complement 575
Notes BNS Roraima (Comp. 09/1934)



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