98

95

During this time the van squadron OB and the fleet CD have
each been advancing towards each other at the rate of 12 knots, I.E.
1600yds in four minutes. In order that the evolution may be com-
plete by the time the van BO meets CD, it must be begun at a dis-
tance of 3200 yards.

During the four minutes the van advances as has been said 1600
yards; the rear gains to the front, in its two wheels, 566yds. Hence
the space separating the two squadrons in column will be (1600 -
566) 1034 yards, half a mile, the movements of the screws of the
ships not having been astern. This space will be covered by the
rear squadron at 12 knots in 2 1/2 minutes. If this interval be con-
sidered too long to intervene between the shock of the first and
second squadrons on the enemy's line, the van squadron by slowing
down to 8 knots can reduce the interval by 400 yards = 1 min, and
leave itself still 400 yds in which to meet the enemy at maximum
speed. One and a half minutes only will intervene between the
shocks of the two squadrons.

[Figure]
Remarks on Charge