=

>

p

~

oS

FsSs

{(Ga

BURST Poin T eae

BIKINE ATOLL
0

2

4

6

8

NAUTICAL MILES
0

2

4

6

8

250

10 12

25

KILOMETERS

Figure 59.

50

CASTLE, BRAVO close-in gamma fallout pattern at H+l;
0745 local time (R/hr).

The same gritty, snow-~like material began to fall on the Japanese
fishing boat at about 0815.

The crew, most of which was topside, had be-

gun to retrieve its long fishing lines from the water soon after the shock
wave passed.

The crew secured the lines and remained on deck to process

the catch during the fallout

(Reference 82).

The ship proceeded north

toward its separate destiny, unobserved by the task force.
this ship was the Daigo Fukuryu Maru

The name of

(Fortunate Dragon No. 5).

The aide

Memoire produced by the Japanese government detailing the ship's movements
is reproduced in Appendix A of this report.
At 0949, a P2V aircraft from VP-29 on Kwajalein, sweeping the sector
centered on a bearing of 65° from the shot point for transient shipping,
became heavily contaminated and aborted its mission.

212

The aircraft sent a

Select target paragraph3