No explosives on board.
There was, however, an interesting and remarkable conflict of testimony as to whether the ship was struck by one or two torpedoes, and witnesses, both passengers and crew, differed on this point, conscientiously and emphatically. The witnesses were all highly intelligent, and there is no doubt that all testified to the best of their recollection, knowledge, or impression, and in accordance with their honest conviction. The weight of the testimony (too voluminous to analyze) is in favor of the "two torpedo" contention, not only because of some convincing direct testimony, (as, for instance, Adams, Lehman, Morton,) but also because of the unquestioned surrounding circumstances. The deliberate character of the attack upon a vessel whose identity could not be mistaken, made easy on a bright day, and the fact that the vessel had no means of defending herself, would lead to the inference that the submarine commander would make sure of her destruction. Further, the evidence is overwhelming that there was a second explosion. The witnesses differ as to the impression which the sound of this explosion made upon them—a natural difference due to the fact, known by common experience, that persons who hear the same explosion even at the same time will not only describe the sound differently, but will not agree as to the number of detonations. As there were no explosives on board, it is difficult to account for the second explosion, except on the theory that it was caused by a second torpedo. Whether the number of torpedoes was one or two is relevant, in this case, only upon the question of what effect, if any, open ports had in accelerating the sinking of the ship.
While there was much testimony and some variance as to the places where the torpedoes struck, judged by the sound or shock of the explosions, certain physical effects, especially as to smoke and blown-up débris, tend to locate the areas of impact with some approach of accuracy.
From all the testimony it may be reasonably concluded that one torpedo struck on the starboard side somewhere abreast of No. 2 boiler room and the other, on the same side, either abreast of No. 3 boiler room or between No. 3 and No. 4. From knowledge of the torpedoes then used by the German submarines, it is thought that they would effect a rupture of the outer hull thirty to forty feet long and ten to fifteen feet vertically.
Flooding of boiler rooms and coal bunkers.
Cockburn, senior Second Engineer, was of opinion that the explosion had done a great deal of internal damage. Although the lights were out, Cockburn could hear the water coming into the engine room. Water at once entered No. 1 and No. 2 boiler rooms, a result necessarily attributable to the fact that one or both of the coal bunkers were also blown open. Thus, one torpedo flooded some or all of the coal bunkers on the starboard side of Nos. 1 and 2 boiler rooms, and apparently flooded both boiler rooms.
The effect of the other torpedo is not entirely clear. If it struck midway between two bulkheads, it is quite likely to have done serious bulkhead injury. The Lusitania was built so as to float with two compartments open to the sea, and with more compartments open she could not stay afloat. As the side coal bunkers are regarded as compartments, the ship could not float with two boiler rooms flooded and also an adjacent bunker, and, therefore, the damage done by one torpedo was enough to sink the ship.
To add to the difficulties, all the steam had gone as the result of the explosions, and the ship could not be controlled by her engines.
Little, senior Third Engineer, testified that in a few seconds after the explosion the steam pressure fell from 190 to 50 pounds, his explanation being that the main steam pipes or boilers had been carried away.
Engines disabled.