Following the theme of these threads:
https://www.alternatehistory.com/forum/threads/1939s-british-army-sanity-options.410890/
https://www.alternatehistory.com/forum/threads/1930s-air-ministry-surprise-sanity-options.410175/
https://www.alternatehistory.com/fo...1930-39-a-british-naval-aviation-wank.410908/
First, the Admiralty doesn't abandon High Pressure steam plants after the problems with HMS Acheron.
Instead they take a more measured approach, maybe deciding (initially) that they aren't suitable for small
ships and put them on larger ones at first.
Given the fact that France had already finalised the design for the 15 inch guns of the Richilieu Class battleships before the Second London Naval treaty had been signed, there is a precedent for setting
15 inches as the limit on gun calibre.
IOTL the initial King George V design was for 3x3 15 inch guns and a top speed of 27 knots.
From what I've read, one of the main advantages of the High Pressure steam plants was fuel efficiency,
meaning less tonnage dedicated to fuel storage, freeing up tonnage either for more powerful engines, or a better hull for speed and handling. I'd say this would probably improve speed by a knot or two, but I'm not an expert.
Other orders/changes
HMS Hood given a Warspite style rebuild, high pressure steam plant allowing
for more armour without compromising speed. Classed as a Battleship
after the rebuilt.
A fully armoured 3x3 8 inch gunned heavy cruiser (Benbow class)
replacing the Hawkins class.
Earlier, more comprehensive rebuild plan for the County Class Cruisers.
Faster Steam Gun Boats, and more are built.
Any ideas on improving Light Cruisers and Destroyers?
Given how similar OTL's Mark III 4.5 inch gun was to the Mark I, maybe don't bother with this particular
redesign and instead concentrate on adapting the design for a destoyer mount. Maybe these first appear on the M class and feature on some War Emergency variants.
Late war destroyer, Tribal hull with high pressure plant, 3x2 4.5 inch guns and an improved AAA plan.
https://www.alternatehistory.com/forum/threads/1939s-british-army-sanity-options.410890/
https://www.alternatehistory.com/forum/threads/1930s-air-ministry-surprise-sanity-options.410175/
https://www.alternatehistory.com/fo...1930-39-a-british-naval-aviation-wank.410908/
First, the Admiralty doesn't abandon High Pressure steam plants after the problems with HMS Acheron.
Instead they take a more measured approach, maybe deciding (initially) that they aren't suitable for small
ships and put them on larger ones at first.
Given the fact that France had already finalised the design for the 15 inch guns of the Richilieu Class battleships before the Second London Naval treaty had been signed, there is a precedent for setting
15 inches as the limit on gun calibre.
IOTL the initial King George V design was for 3x3 15 inch guns and a top speed of 27 knots.
From what I've read, one of the main advantages of the High Pressure steam plants was fuel efficiency,
meaning less tonnage dedicated to fuel storage, freeing up tonnage either for more powerful engines, or a better hull for speed and handling. I'd say this would probably improve speed by a knot or two, but I'm not an expert.
Other orders/changes
HMS Hood given a Warspite style rebuild, high pressure steam plant allowing
for more armour without compromising speed. Classed as a Battleship
after the rebuilt.
A fully armoured 3x3 8 inch gunned heavy cruiser (Benbow class)
replacing the Hawkins class.
Earlier, more comprehensive rebuild plan for the County Class Cruisers.
Faster Steam Gun Boats, and more are built.
Any ideas on improving Light Cruisers and Destroyers?
Given how similar OTL's Mark III 4.5 inch gun was to the Mark I, maybe don't bother with this particular
redesign and instead concentrate on adapting the design for a destoyer mount. Maybe these first appear on the M class and feature on some War Emergency variants.
Late war destroyer, Tribal hull with high pressure plant, 3x2 4.5 inch guns and an improved AAA plan.
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