In this case, the torpedo is sufficiently diverged when near to the
vessel with a good scope of tow-rope out. After having crossed her bow,
proceeding onwards, the tow-rope will be brought obliquely across her
cable, and the torpedo will swing into her, as shown in the drawing. It
may be here remarked that, in all cases, the depth of explosion can be
obtained by the sudden slacking of the tow-rope; and the tow-rope, once
under the keel, causes the torpedo to be hauled down near to it before
exploding.
[Illustration: Plate 5.
Kell Bros. Lith. London.