Located in the extreme northeast part of Shikoku on the Bisan Straits of the Inland Sea and southeast of Okayama on Honshu. Takamatsu is Shikoku's leading port. As the terminus of the railroad ferry connecting with Ano[2] on Honshu, the city is the focal point of Shikoku's major rail and road systems, has a commanding position to the Bisan Straits, is the capital of Kagawa Prefecture and has some industrial significance due to its railroad ferry, yards and shops. Among the industries in Takamatsu are the Kurashiki Aircraft Plant, the Makita Iron Works-Chemical plant, as well as facilities for the manufacture of explosives and an oil refinery. This city's population of 111,207 (1940 figure) is in a triangular 2 1/4 square mile territory. Takamatsu is based on the water front, is highly congested (density of 49,000 per square mile), and has no effective fire breaks.
」
—2. STRATEGY AND PLANS OF OPERATION b. Importance of Targets (1) Mission Number 247, Takamatsu(21st Bomber Command Tactical Mission Report 247, 250より)
高松空襲に際して米軍が決定したMPI(爆撃中心点、Mean Point of Impact)は現・国道11号高松北バイパスと高松中央商店街が交差する地点(→高松空襲爆撃中心点)。そこから半径4000フィート(1200m)の範囲が確率誤差円(照準円)であり、この範囲に高松市の重要部分が収まるように設定された。