FatR
Posts: 2522
Joined: 10/23/2009
From: St.Petersburg, Russia
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While I'm at it, how about the following take on the escort forces and subchasers?
CD-A Class (16 ships built before the war, 2 in construction). First ships laid down in 1938-39 according to the specifications created by the Escort Command, instead of Shimushu escorts and Ch-4 (and following) large subchasers, using diesel engines of same power (2600 hps) as the latter, but with the requirement of relatively high range and greater seaworthyness, so that these ships will be able to escorting resupply convoys to Mandates in case of a war (convoys from SRA obviously aren't on the table yet...). This, as well as the requirement of heavier armament, so that new ships won't be outgunned by subs, leads to serious increase in size. Their hull resembles a cross between a Ch-13 subschaser and a RL kaibokan. The design is kept simple, by pre-war standards, due to conflict between doctrines and plans developed by Escort Command with limited funding, not allowing to implement them. Armament removed from reconstructed warships is used for same reason. 800 tons of standard displacement, speed closer to 17kts, range 6000 nms, 1x1 120/45 10YT (on the bow), 1x4 13.2/76, 1x1 40mm Vickers, 18 DCs (an increase to 36 is already planned).
This class obviously replaces Ch-4 and Ch-13 large subchasers.
CD-B class (1 built before the war, 15 in construction, available throughout 1941-42). A version which production launched on merchant shipyards in parallel with Standard Type cargo ships in late 1940, as the part of the same program of ensuring the Empire's economical security in case of a war. Plagued by various flaws and delays, caused by excessive attempts to cut costs and builders' lack of experience, as well as struggles for obtaining their cut of budget until the opening of hostilities. Uses an engine comparable to Ch-13 subchasers, which proves underpowered. Results are less than impressive: 730 tons, 14 kts, range 4800 nms, 1x1 120/45 3YT (due to shortage of high-angle guns), 2x1 40mm Vickers, 1x1 76/40, 36 DCs.
CD-C class (80 available starting from autumn of 1942 and until the end of 1944). Ordered immediately after the initial success in the war becomes clear, in place of Etorofu kaibokans and Ch-28 subchasers. Replaces Etorofu, Mikura and Ch-28 classes. Derived from CD-A, as Escort Command cannot resist the lure of a ship with greater overall performance. 850 tons, 20 kts (engine is less powerful than that of Etorofu/Mikura/Ukuru, about 3400 hps, but size is smaller as well), 7000 nms, 1x1 120/45 10YT, 3x2 25/60, 2x1 13.2/76, 72 DCs.
Take note, that the aft 120mm guns aren't installed on any of the proposed escorts. That's due to doctrine, that commands escorts to engage subs by swiftly closing distance, with the intent to conclude attack by ramming. Therefore aft guns are seen as unnecessary for artillery duels with subs, and against air targets extra 25mm MGs are more effective than 120mm DP guns without real fire directors (IRL, not in the game...). If some sort of modern single-mount 76-88 AA gun will be adopted by Navy in this alternative, it can be installed in the aft position later in the war, instead of more 25/60 triples. Besides more ASW/AA weapons, extra space will be used to expand fuel tanks a bit.
CD-D and CD-E (300+ available starting from early 1943 and until the end of the war). Class CD-B finally done right. A rough equivalent in size, engine power, and capabilities to RL Types C and D, including use of turbine engines on CD-E, due to deficit of diesels, but with armament based on CD-C above, although with less AAMGs initially.
I'm postulating parallel production of two escort classes to keep a link with the reality, to a degree. Tactically, fast and more capable CD-C escorts will be intended to be able to support escort destroyers in protecting fast convoys running to the frontline, (or working in dedicated ASW patrols, when these will be adopted), while other escorts will be meant to defend shipping lanes to SRA.
Cha-1 auxilary subchasers (approximately 200 available, beginning from summer of 1942). No difference from the type in the game. Production starts on small shipyards immediately after the beginning of hostilities, to provide protection from coastal convoys and harbor defense.
Pa-1 patrol boats (approximately 300 available, beginning from early 1944). A replacement class for Cha-1 SCs, using the same engine and built on the same shipyards. Bigger and slower, with 2500 nm radius of action, and armament of 4x1 25/60 and 18 DCs.
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RE: The PERFECT WAR Mod - 
, the Japanese had to end some of their offensives because of the need to get many ships back into hauling resources. They don't have the lift capability to be able to lift a whole army throughout the war.
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