Mission Number 275
17/18 July 1945
Shimonoseki Straits, Seishin, Nanno-Fushiki, Hieashi and Iwase
313th Bombardment Wing
Number A/C Airborne:
% A/C Bombing Primary:
90% (27 primary and 1 alternate)
Type of Mines and Settings:
MK26-33 1000# and MK 25 2000# mines with various settings.
Tons of Mines Dropped:
Time Over Primary:
180048K - 180311K
Altitude of Attack:
7100 - 8500
Weather Over Target:
4/10 - 10/10
Total A/C Lost:
Resume of Mission:
It was estimated that of the 238 mine dropped, 237 were
effective and would continue the desired blockades.
Only 1 A/C dropped mines visually.
Two E/A sighted made no attacks.
No claims. Flak was
heavy and light, meager and inaccurate.
Two A/C were non-effective.
One RCM A/C was not included in total A/B.
Seven B-29's landed at Iwo Jima.
Average mine load:
13,166 lbs. Average fuel
reserve: 707 gallons.