Page 302 of Jane's Fighting Ships 1939 edited by Raymond V. Blackman
Second Fleet Replenishment Law, 1933 (First Law completed at the end of 1937)
2 cruisers of 8,500 tons [Chikuma and Tone]
2 aircraft carriers of 10,000 tons [Hiryu and Soryu]
14 destroyers
16 torpedo boats [these were not MTBs, but small destroyers and only 8 were built]
4 submarines
6 submarine chasers
1 submarine depot ship [Soho and Zuiho]
1 repair ship [Akashi]
2 oilers
3 aircraft tenders [Chitose, Chiodya and Mizuho]
The Second Replenishment Law also includes the strengthening of the Fleet Air Arm by a further 8 squadrons between1934-37, giving a total of 39 squadrons in 1937. [By contrast RAF Expansion Scheme A of 1934 increased the FAA by 54 aircraft (the equivalent of 4½ squadrons) to the equivalent of 16½ by 1939.]
Third Fleet Replenishment Law, 1937
4 battleships, 1 or 2 aircraft carriers, and a number of cruisers, destroyers and submarines. To be completed by the end of 1942.
Fourth Fleet Replenishment Law, 1939
To include the expenditure of Yen 1,700,000,000 (of which Yen 1,200,000,000 will be on new construction) up to the end of 1945.
According to the Wikipaedia (and Conway's) the Second Fleet Replenishment Law was passed in 1934 and 48 ships were built instead of 51 in the Jane's article. The differences are a second submarine depot ship was built, 4 submarine chasers instead of 6 and no oilers.
In the battleships section it says that the 4 ships were laid down at Kure, Yokusaka, Kawasaki and Mitsubishi 1938-39. The aircraft carriers section does not mention Zuikaku at all. It listed Shokaku's launching date as 2nd June 1939, which to paraphrase Ken Bruce is, "one day out." In the cruisers section it says that 7 light cruisers of 7,000 tons were suspected to be under construction. 2 Katori class were actually built under the 1937 Law followed by 1 Katori, 4 Agano and 2 Oyodo class in the 1939 Law. In the destroyers section that 12 Kagero class were building when 15 were ordered under the 1937 Law. I didn't check the submarines.
So Jane's estimate of the battleships is an overestimate of 100%. Yamato was laid down at Kure in 1937, Musashi at Mitsubishi in 1938 and the battleship laid down at Kawasaki may have been mistaken for the Zuikaku laid down there in 1938. Where they go the Yokusaka ship from I don't know. They underestimated the number of aircraft carriers under construction by 50%, but were more accurate with the cruisers and destroyers.
Second Fleet Replenishment Law, 1933 (First Law completed at the end of 1937)
2 cruisers of 8,500 tons [Chikuma and Tone]
2 aircraft carriers of 10,000 tons [Hiryu and Soryu]
14 destroyers
16 torpedo boats [these were not MTBs, but small destroyers and only 8 were built]
4 submarines
6 submarine chasers
1 submarine depot ship [Soho and Zuiho]
1 repair ship [Akashi]
2 oilers
3 aircraft tenders [Chitose, Chiodya and Mizuho]
The Second Replenishment Law also includes the strengthening of the Fleet Air Arm by a further 8 squadrons between1934-37, giving a total of 39 squadrons in 1937. [By contrast RAF Expansion Scheme A of 1934 increased the FAA by 54 aircraft (the equivalent of 4½ squadrons) to the equivalent of 16½ by 1939.]
Third Fleet Replenishment Law, 1937
4 battleships, 1 or 2 aircraft carriers, and a number of cruisers, destroyers and submarines. To be completed by the end of 1942.
Fourth Fleet Replenishment Law, 1939
To include the expenditure of Yen 1,700,000,000 (of which Yen 1,200,000,000 will be on new construction) up to the end of 1945.
According to the Wikipaedia (and Conway's) the Second Fleet Replenishment Law was passed in 1934 and 48 ships were built instead of 51 in the Jane's article. The differences are a second submarine depot ship was built, 4 submarine chasers instead of 6 and no oilers.
In the battleships section it says that the 4 ships were laid down at Kure, Yokusaka, Kawasaki and Mitsubishi 1938-39. The aircraft carriers section does not mention Zuikaku at all. It listed Shokaku's launching date as 2nd June 1939, which to paraphrase Ken Bruce is, "one day out." In the cruisers section it says that 7 light cruisers of 7,000 tons were suspected to be under construction. 2 Katori class were actually built under the 1937 Law followed by 1 Katori, 4 Agano and 2 Oyodo class in the 1939 Law. In the destroyers section that 12 Kagero class were building when 15 were ordered under the 1937 Law. I didn't check the submarines.
So Jane's estimate of the battleships is an overestimate of 100%. Yamato was laid down at Kure in 1937, Musashi at Mitsubishi in 1938 and the battleship laid down at Kawasaki may have been mistaken for the Zuikaku laid down there in 1938. Where they go the Yokusaka ship from I don't know. They underestimated the number of aircraft carriers under construction by 50%, but were more accurate with the cruisers and destroyers.
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