Our Navy in the War

by Lawrence Perry

But the Germans miscalculated, as already set forth. We took over the 109 German vessels in April, and by December 30 of that year, 1917, all damage done to them had been repaired and were in service, adding more than 500,000 tons gross to our transport and cargo fleets. In general the destructive work of the German crews consisted of ruin which they hoped and believed would necessitate the shipping of new machinery to substitute for that which was battered down or damaged by drilling or by dismantlement.

To have obtained new machinery, as a matter of fact, would have entailed a mighty long process. First, new machinery would have had to be designed, then made, and finally installed. These would have been all right if time was unlimited. But it was not; it was, on the other hand, extremely limited. The army wished to send troops abroad, the Allies were pleading for men, and the only way to get them over in time to do anything was to do quick repair jobs on the damaged vessels. But how? Investigation revealed how thorough the work of the German seamen—now enjoying themselves in internment camps—had been. Their destructive campaign had been under headway for two months, and they had thus plenty of time in which to do all sorts of harm, ranging from the plugging of steam-pipes to the demolition of boilers by dry firing.

The Shipping Board experts were the first to go over the German craft, and as a result of their survey it was announced that a great deal of new machinery would have to be provided, and that a fair estimate of the work of remedying the damage inflicted would be eighteen months. But this was too long, altogether so. The officers of the Navy Bureau of Steam Engineering took a hand, and finally decided that it would be possible to clear the ships for service by Christmas of that year. (As a matter of record, the last of the 109 ships was ordered into service on Thanksgiving Day.)

To accomplish the purposes they had in mind, the Navy Department engaged the services of all available machinery welders and patchers, many of whom were voluntarily offered by the great railroad companies. Most of the time that was required was due not so much to actual repair work as to the devious and tedious task of dismantling all machinery from bow to stern of every ship in order to make certain that every bit of damage was discovered and repaired. In this way all chance of overlooking some act of concealed mutilation was obviated.

It would appear that explosives were not used in the process of demolition by the Germans, but at the time the engineers could not be sure of this, and as a consequence as they worked they were conscious of the danger of hidden charges which might become operative when the machinery was put to the test, or even while the work of dismantling and inspection was being carried on. There were, however, discovered, as a result of this rigid investigation of every mechanical detail, many artful cases of pipe-plugging, of steel nuts and bolts concealed in delicate mechanical parts, of ground glass in oil-pipes and bearings, of indicators that were so adjusted as to give inaccurate readings, of fire-extinguishers filled with gasoline—in fact, the manifold deceits which the Germans practised would make a chapter of themselves.

Suffice to say, that through painstaking investigation every trick was discovered and corrected. On each vessel there was no boiler that was not threaded through every pipe for evidence of plugging, no mechanism of any sort that was not completely dismantled, inspected, and reassembled. On one ship the engineers chanced to find a written record of the damage inflicted. In every other case the search for evidence of sabotage was blind. This memorandum in the case of the one ship was evidently left on board through an oversight, and written in German, was a veritable guide-book for our engineers. In order that the reader may have some idea of the sort of damage done, the following extracts from that memorandum of destructiveness is herewith presented:

"Starboard and port high pressure cylinders with valve chest; upper exhaust outlet flange broken off. (Cannot be repaired.)"

"Starboard and port second intermediate valve chest; steam inlet flange broken off, (Cannot be repaired.)"