
were merely the latest example of wishful, “bigger is better” thinking by
battleship advocates dating back to 1903.
67
When the London Naval Conference began in December 1935, the
Japanese delegation rejected continuation of the quantitative limitations of
the ratio system. Japan was willing to allow Britain to build above a “com-
mon upper [tonnage] limit” because of its worldwide commitments, but
was insistent on exact parity with the United States.
68
With the talks at an
impasse in January 1936, the Japanese delegation made a sweeping pro-
posal for deep cuts in naval armaments. The head of the delegation, Ad-
miral Nagano Osami, proposed a reduction in all “offensive” weapons,
which he defined as battleships, aircraft carriers, and 8-inch-gun heavy
cruisers. The Japanese further proposed retention of a common upper
limit, that is, parity among the three major naval powers, with no restric-
tions on the type of warships allowed. This proposal was rejected in short
order by the British and Americans, who believed that such a reduction in
their naval superiority would cede Asia to Japan and threaten the security
of Australia, New Zealand, and the Philippines. Admiral Nagano an-
nounced that Japan could no longer pursue negotiations based upon quan-
titative inferiority, and the Japanese delegation announced its withdrawal
from the conference that afternoon.
69
In spite of Japan’s withdrawal, the Second London Naval Treaty was
signed by the United States, Britain, and France on 25 March 1936 to run
from 1937 through 1942. Separate agreements were signed with Germany
and the Soviet Union. An escape clause allowed an escalation to 16-inch
guns if either Japan or Italy failed to subscribe to the treaty by 1937.
70
A new naval arms race was a certainty unless Japan signed the treaty and
accepted qualitative parity along with quantitative inferiority. The Japan-
ese declined two invitations to sign the treaty during 1937, preferring to be
free to determine their own naval policy. The British Admiralty urged its
government to threaten to use British financial and industrial superiority
to outstrip the Japanese efforts through a more aggressive battleship build-
ing program. This was analogous to Carl Vinson’s 1934 threat to build five
warships for every three laid down by Japan.
71
On 5 February 1938, France, the United States, and Britain sent Japan
an ultimatum demanding details of Japanese battleship programs and as-
surances that they would not build ships exceeding the limits set by the Sec-
ond London Treaty. Already committed to the construction of the Yamato-
class superbattleships, the Japanese saw no reason to submit to the dictates
Disarmament, Depression, and Politics
175