USS Memphis (AC-1909-10)

 

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I have always liked the idea that the world was fooled by the Royal Navy putting out that the Invincible class ships would be 'Dreadnought' cruisers armed with 9.2" guns. The Germans built the Blucher with 8.2" guns in reply and that ship was outclassed and sunk at the Dogger Bank Battle in a fight with the battlecruisers of the British Fleet. The US Navy stopped producing large cruisers at the armoured cruisers of the Tennessee class with 4x10" guns. The next big 'battlecruisers' built for the US were the Lexington class which were either scrapped or converted to aircraft carriers (Lexington and Saratoga). There is a gap between the US capital ship program that I would like to fill with four 'large cruisers' of an improved Tennessee type. Designed 1905-06, laid down in 1906-07, the four ships were due to be completed in 1909-10. The one thing that these ships will have is the new 'turbine' machinery installed on these ships and one of the Delaware Class battleships of the same age. The ships were classed as scout cruisers when completed but the ships were reclassified in 1912 when the Royal Navy brought in the Battlecruiser designation.



The Memphis class made a fine sight. The South Carolina lineage is plain to see with the superfiring turrets and cage masts.

March 1908 and the Invincible is completed and revealed to the world with its eight 12" main armament. Shock! Horror! where are the 9.2"? The Americans, Germans, Japanese, French and others looked at their, supposedly, equivalent ships with 8.2" to 10" weapons and realised they had been tricked. Their ships no longer looked like world beaters. All were inferior to the British ships. Most of these ships were only half to two thirds complete, but too much had already been invested to scrap them and start again. The whole point of what became the 'battlecruser' was to catch and dispatch the commerce raiding cruisers as happened at the start of WW1 when Doveton-Sturdee's two battlecruisers caught and sunk Von Spee's armoured and light cruisers at the Falkland Islands. The Memphis and Salem could have performed the same duty just as effectively as the Invincible and Inflexible.

The four Memphis class performed very well in service. Two went to the British fleet and joined the Battlecruiser Fleet at Rosyth with the USS Hawaii in 1917. The other two remained with the Pacific Fleet. None of the ships received any damage during the war, and the Memphis and Salem were used on repatriation duties at wars end.

The period between the end of the war and the Washington Treaty set the tone for the rest of the service lives of the four ships. 1917 and the two ships Langley and Missoula are sent off to Seattle and San Diego for conversion to aircraft carriers. (I did purposely name one of the ships 'Langley' to replace the collier as the US Navy's first carrier.) The other two ships were kept till 1924 when the US Navy had to make the choice to keep the two ships or scrap them. (I will do a WW2 version, even though it would normally end up as these ships being scrapped in favour of more modern ships.)

So two more drawings, one as a carrier and one as a light battlecruiser conversion.



While this conversion looks good. I can't see the US Navy spending the money. The ship(s) may have received damage at Pearl Harbour and receive the upgrades and refits the battleships were given. But 'what if' is my middle name so the impossible often happens and the drawings keep coming.
 

Displacement 16,250 tons std 18,400 tons full load
Length 550 ft (574 ft after refit)
Breadth 74 ft
Draught 24 ft
Machinery 2 shaft, turbine engines, 50,000 shp
Speed 26 knots
Range 7000 miles at 12 knots
Armour 6" side, 2" deck, 6" turrets
Armament As completed 1910

8 x 10" (4x2)
10 x 5" (10x1) LA
6 x 3" (6x1) LA
 
As refitted to 1942

8 x 10" (4x2)
8 x 5" (4x2)
24 x 40mm (6x4)
30 x 20mm (30x1)
Complement 870 (900)
Notes Memphis

Salem

Langley

Missoula
 




The conversion of the two ships Langley and Missoula was carried out in three different phases. First phase was to fit a flight deck on the ships so that trials with wheeled aircraft could be carried out and shown to be effective to those who counted. Second phase was to strip the ship from bow to stern fit a hangar for storing the aircraft to be carried in. Refitting the flight deck at the new higher level. Fitting the new funnel arrangement with the new bridge superstructure forward of them. Phase three was the reworking of the bow so that spray would deflect away from the aircraft taking off. The fitting of the armament (which changed regularly over the next 20 years).

Further improvements to the ships were made on a regular basis new equipment was thought of, designed and built. Arrestor wires, catapults, all were added as they came into service.
 

Displacement 16,750 tons std 19,100 tons full load
Length 574 ft
Breadth 74 ft
Draught 24 ft
Machinery 2 shaft, steam turbines, 50,000 shp
Speed 26 knots
Range 7000 miles at 12 knots
Armour 6" side, 2" deck
Armament 2 x 5" (2x1)
6 x 0.5" mg (6x1)
 
Aircraft 20
Complement 790
Notes Langley

Missoula


The real Langley as it appeared as an aircraft carrier before conversion to a seaplane carrier.



 

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