HMAS Mount Perry (CLA-1940+)

HMSAS Mount Kiliminjaro (CLA-1941+)


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The advent of the twin dual-purpose weapons of 5.25" and 4.5" sizes made it possible to produce what would become anti-aircraft cruisers.  A 500 foot ship was designed on which both Royal Navy and the Australis Navy fitted 10 guns - the Royal Navy 5.25" and the Australis Navy 4.5".  The Royal Navy ships suffered from excess top weight and eventually the 5th 5.25" turret was removed. Since the Australis Navy never built any of the 5.25" it had fitted its ships with the smaller and lighter 4.5" turret and did not have the same problems. Like all navies the Australis Navy gave these ships a secondary duty, that of flotilla cruiser. Acting as the flotilla leader for groups of destroyers. To this end a speed of 34 knots was required and this was exceeded by most of the class on trials.

Armour was kept to a minimum with a 3" belt over the machinery spaces but the deck armour at 2.5" was fitted to include the magazines as well as the propulsion rooms.

The first ships were laid down in 1936 with a pair being allocated to each of the Tasman Sea class aircraft carriers and then extra pairs were built to escort the Endeavour Class as well. Which gave: 1936 x 2, 1937 x 2, 1938 x 4, 1939 x 4. This was termed the first batch. The second batch were to the same design but the minor armaments were altered as better weaponry became available e.g. the 40mm STAAG and Hazemeyer mounts. These ships were laid down as 4 in 1940, 6 in 1941, and 4 in 1942. This gave completion dates for the batch 2 ships from late (Dec-1942) 1942 through to early 1945. The design was exported to Southern Africa who did not have any ships with 5.25" so avoided the RN design in favour of the 4.5" Mount Perry type. 3 pairs were built by the SAN to go with their 3 main aircraft carriers.

This class became the standard cruiser for the Australis Navy in World War 2.


Displacement 5,600 tons std, 7000 tons full load
Length 508 ft
Breadth 53 ft
Draught 15 ft
Machinery 4 shaft steam turbines, 75,000shp
Speed 34+ knots
Range 1500 at 30 knots, 5500 at 18 knots
Armour 3" side, 2.5" deck
Armament 10 x 4.5" (5x2)

12 x 2pd (3x4)

10 x 20mm (4x2 2x1)

Aircraft nil
Torpedoes 6 x 21" (2x3)
Complement 500
Notes HMAS Mount Perry

HMAS Mount Kosciusko

HMAS Mount Barker

HMAS Mount Ngaruhoe

HMAS Mount Surprise

HMAS Mount Eagle beak

HMAS Mount Ruapehu

HMAS Mount Garnet

HMAS Mount Gordon

HMAS Mount Larcom

HMAS Mount Margaret

HMAS Mount Barnett

HMAS Mount Poole

HMSAS Mount Kiliminjaro

HMSAS Mount Cameroon

HMSAS Mount Botlolong

HMAS Mount Montgomery

HMAS Mount Stewart

HMAS Mount Minerva

HMAS Mount Morgan

HMAS Mount Archer

HMAS Mount Tongariro

HMAS Mount Egmont

HMAS Mount Coolon

HMAS Mount Molloy

HMAS Mount Buller

HMAS Mount Hutt

HMAS Mount Barnett

HMAS Mount Meharry

HMSAS Mount Kibo

HMSAS Mount Makheka

HMSAS Giants Castle


Royal Navy cruiser Scylla with 4.5" main armament. These were the BD mounts and required an extra deckhouse as part of the mounting.


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