Magazines and shell rooms were comparable in the two designs: 5 ½ in on ½ in sides with 3in on ⅜ in decks and 3in on ½ in bulkheads. The most striking improvement over Surrey was in protection to the boiler room fans (necessary for speed): 4 rather than 2in sides, 3in rather than 1in ends, and 2in rather than 1in deck. She would have 5 ½ in armour on her ½ in shell over her machinery, closed by bulkheads of similar thickness and covered by a 2 ½ in deck on a 1 Véin deck. Armament was the usual four twin 8in (100 rounds per gun), four 4in HA (200 rounds each), two quadruple 0.5in machine guns, and two quadruple torpedo tubes. Her 60,000shp plant was expected to drive her at 30kts at Legend (standard: 10,000 tons) displacement and at 29kts at deep load. A Legend dated 2 July 1928 showed a ship the same size as HMS Surrey (also cancelled: 570ft pp, 600ft loa x 64ft x 14ft fwd and 19ft aft), with a freeboard forward of 30ft 6in, 24ft amidships, and 14ft 6in aft. The A-type Cruiser of 1929, which was aborted by the 1930 London Naval Treaty, introduced important later features which were then incorporated in the modified design of HMS Exeter, the new streamlined bridge, perpendicular masts and funnels, and fixed catapults. British Cruisers: Two World Wars and After (Kindle Locations 3688-3692). ** Arrangements looked similar to Exeter, which benefited from Surrey design process, except she had four twins. Legend and drawings were approved by the Board on 22 November 1928. Controller liked the added protection and the improved arrangement… The reduction in power eliminated one funnel, clearing the deck for catapults and HA directors. The weight saved in machinery and hull could provide protection for the entire machinery space.
Hull weight was cut by reducing hull depth…
Speed would fall to 30kts or perhaps 30.25kts.
The other ship, Design Y, cut power to 60,000shp (six boilers, four shafts). The protected part of the machinery would be protected against 8in fire between 7,000 and 20,000yds, and against 6in fire at all ranges up to 20,000yds. Magazines would be protected against 8in fire at all ranges below 20,000yds, and against 6in fire at all ranges. The new (10,000 ton) sketch design showed 1,620 tons of armour, compared to 1,100 tons for the most recent A Cruiser Dorsetshire.
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