I don't think there have been any Australian ships posted as of yet, so here is
HMAS Australia, the only capital ship of the Australian Navy. One of three
Indefatigable class battlecruisers, she was kept in the Pacific at the beginning of WW1 as the
Australia was more powerful than any ship in the Imperial German Navy's East Asia Squadron. After the Battle of the Falkland Islands destroyed most of the East Asia Squadron,
HMAS Australia was transferred to the Atlantic. Unfortunately, she collided with her sister ship
HMS New Zealand and missed the Battle of Jutland. After the war, the ship fell victim to the Washington Naval Treaty and was scuttled in 1924. One of the propellers remains on display at the Australian War Museum.
Length: 590 ft, Beam: 80 ft, Displacement: 22,100 tons
31 coal burning Babcock & Wilcox boilers fed 2 sets of steam turbines going to 4 shafts. Design was for 44,000 HP and 25 knots, but ended up producing 55,000 HP and 26.9 knots.
Main armament: 8 (4x2) 12"/45 caliber rifles throwing 850 lb shells to 25,000 yds.
Secondaries: 16 (16x1) 4" guns, 2 18" torpedo tubes
Armor: Belt: 4"-6", Deck: 1.5" - 2.5", Turrets: 7"
Commissioned: 21 June 1913, Decommissioned: 12 December 1921 Scuttled: 12 April 1924
en.wikipedia.org
As a side note, here is the wikipedia page explaining the Royal Navy's Pennant system for numbering.
en.wikipedia.org
Side view of a large warship with three funnels and two large masts at rest on flat water.
Australia's forward turret ('A') in 1918; note the port (i.e. left-side) wing turret in the background with a biplane on its roof
Australia at anchor in Queensland waters
Australia leading the ships of the
Australian Naval and Military Expeditionary Force into Rabaul Harbour on 12 September 1914
Australia leading a line of ships under the
Forth Bridge
A
Sopwith 1½ Strutter launching from one of
Australia's turrets