there was a natural misunderstanding when "E 54" stood over to tow the boats back to their ship. The steamer's crew were living too fast in twenty minutes for the situation to be quite clear, and in view of their knowledge of the way in which certain U-boats had dealt with survivors, the fact that "E 54" had to actually chase the lifeboats is comprehensible. The following is from reports of captured U-boat's men:-- "Several prisoners give clear evidence of the fear inspired by the possible presence of Allied submarines submerged when they themselves were on the surface. Besides the probable results of this method of attack, the apprehension of it constitutes a seriously demoralising influence." From an officer:-- "We knew that for every boat we had working in an area, you had two looking for us." The latter statement shows an error in the officer's calculations. The odds were very much the other way; but his error shows that moral effect goes for a good deal in war. In actions between submarines, guns have also been used, as have rifles, pistols, and--at short range in the dark--verbal abuse; but no definite sinkings on either side can be traced to these causes. In our boats it was the rule to attack submerged, if possible--in the U-boats it was rare to find an inclination to pursue a gun-action to its logical end. A submarine, when nearly hit, can refuse action at any time by diving. This, of course, forces the opponent left on the surface to dive also, as it would be unhealthy then to remain on the surface in that locality. Our submarines were always more lightly gunned than the U-boats. Few of them carried more than one small gun--and that one usually an anti-aircraft weapon. This was for two reasons. Firstly, our boats are meant for warship-destroying as opposed to commerce-destroying. The attacking of warships implies speed under water (one should have, roughly, at least half the speed of the class of ship one is after). Big guns are bad for stream-line, and therefore militate against high submerged speed. Secondly, we were supplying guns to Allies, our own Army, and to all our merchant ships and "mystery ships," and the submarines had to take their turn at the supply with the rest.