The Story of Our Submarines Part 5

"Lieutenant Varley is a very able and gallant submarine officer, and although there is no possible excuse for his having disregarded his orders and proceeded to the Weser, it is submitted that his skilful and successful attack on the German submarine, in spite of a defective periscope, and his subsequent conduct, especially during the critical time when he was being swept for by destroyers with explosive sweeps, may be taken into consideration."

It was, however, a year before Lieutenant Varley was decorated for this action, My Lords deciding that after that interval the example he had created would be forgotten.

I have mentioned the question of our own boats' experiences of depth-charges. A few instances of both English and German anti-submarine strafing may be of interest. At the beginning of the war the German depth-charge was a thing of contempt, and its English counterpart was nearly as useless. Submarines were sunk in those days by what might be called "accidental" methods. The boat either made a mistake and was then rammed or destroyed by gunfire, or else it met a mine or ran into nets. Depth-charges were not big enough to be dangerous, and it was not realised that even a big depth-charge must explode very close to the boat's hull before actual damage is caused.

Moral effect is, of course, a different thing: there is a case of a U-boat surrendering as a result of one rivet having been knocked out of her hull by a comparatively distant explosion. That, of course, is a matter of personnel; and the depth-charges we used often had a remarkable effect, although no structural damage whatever had been caused by them. When our big depth-charges were first supplied, patrol boats and destroyers carried but few of them and were expected to be sparing in their use--in fact, they were not supposed to use them unless a fair chance was seen of an almost direct hit. Later, in 1917, the supply exceeded the demand--at least the demand on the previous scale--and anti-submarine vessels were supplied with just as many as they could comfortably stow on their decks; while orders were issued that any patch of water in which there was the faintest possibility or suspicion of a U-boat being present was to be sprinkled with depth-charges until there was no possibility of anything intact remaining in range. It is a feature of life in submarines that one always gives the hunters credit for seeing more than they do see: one watches a Zeppelin through the periscope--a Zeppelin cruising at perhaps five miles' range away--and one feels a sort of shrinking and an inclination to slip down to ninety feet or so for a spell in the certainty that one's periscope must have been seen. Of course it hasn't, and it probably won't be. One meets a dark shape at night, and one does a "crash dive" at once, heaving a sigh of relief as one sees the gauge show sixty feet. One forgets that a submarine, besides being a much smaller mark to see at night, keeps in all probability a far better look-out than any other cla.s.s of vessel. In the same way, the explosion of a depth-charge usually sounds closer than it is, and the submarine officer is inclined to jump to the conclusion that it is directly aimed at him or at some indication of his wake. As a matter of fact it is more probably aimed at an oil-patch or a piece of drift-wood some half-mile off, and the s.h.i.+p dropping it has no real knowledge of the submarine's proximity at all.

One German U-boat officer stated that in his last five trips he had heard an average of 150 charges per trip exploded in his vicinity. It is probable that only a small percentage of these were dropped on clear knowledge of his presence. Being an officer of good morale this profusion had not worried him, but with a less experienced captain some direct results would probably have been gained.

In the notes taken from the conversation of the German officers, the case of the English boat that met a mine at Amrum Bank is mentioned.

The case provides a good ill.u.s.tration of what a direct hit, even by a full-sized mine, will _not_ do, when the morale of officers and men is of the ideal standard, which every submarine service tries to obtain. (I keep referring to "English boats"; in this case I mean by that that the captain was Canadian, and most of the rest of the crew Scotch or Colonial.) The report is written by the captain of the _Maidstone_.

"Submarine 'H 8' (Lieut.-Commander B. L. Johnson, R.N.R.), when diving at 60 ft. off Ameland Gat on March 22, 1916, heard a slight sc.r.a.ping noise forward, which was followed by a violent explosion.

The submarine immediately sank by the bows and struck the bottom at 85 ft. with an inclination of 25 or 30.... The captain reports that although it appeared obvious to all that the boat was lost, the officers and entire crew proceeded to their stations without any sign of excitement, and all orders were carried out promptly and correctly. I would submit that such conduct, in the face of apparent certain death, is an example of which the whole Service may be proud.

"Motors were put to full speed astern, and Nos. 2 and 3 ballast-tanks were blown--No. 1 being found open to the sea. The submarine then came to the surface. Fuel was then blown, and after some temporary repairs had been made, course was shaped for Tersch.e.l.ling, and then Harwich.

"The damage to 'H 8' is serious, the mine having exploded against the starboard forward hydroplane. Both forward hydroplanes and the bow cap are gone; the upper part of the hull in that vicinity as well as both starboard torpedo-tubes are wrecked. All bulkheads appear to be strained, but luckily the one near the rear of the torpedo-tubes, although leaking, did not give way...."

This boat came out of the Bight and back to Harwich at slow speed on the surface and with a large part of her forward buoyancy destroyed.

The luck that watches over the competent took her back unmolested by the enemy. There is a case where the run back of a damaged boat was performed over a yet greater distance through enemy waters.

On the 21st June 1915 submarine "S 1" (Lieut.-Commander Kellett) was ten miles north of Heligoland. She dived during the day on several occasions, owing to sighting one Zeppelin, one seaplane, nineteen trawlers (sweeping in lines), and she also attacked, fired at, and missed a destroyer. Her port engine then broke down completely. On the 22nd, by Hiorn's Reef Light-vessel, she sighted a Zeppelin and a Pa.r.s.eval. She worked on engine defects all day while diving.

On the 23rd the starboard engine broke down completely, and she continued to work on defects. A Zeppelin was in sight nearly all day.

On the 24th she captured the German trawler _Ost_. She put a prize crew of five hands with Lieutenant Kennedy on board, pa.s.sed a tow-rope over, and started back to Yarmouth. On the 25th the trawler's engine broke down. "S 1's" crew refitted the HP piston, crossheads and crankhead bearings, and at four knots speed the strange procession proceeded on out of the Bight. On the 26th they stopped to refit the trawler's L.P. cylinder (they must have been by this time thoroughly sick and tired of engines and all to do with them), and proceeded. On the 27th June they made a triumphant arrival.

There seems to be a special providence that watches over people who won't admit defeat. I don't know about faith moving mountains, but (I'm sorry to have to use the word, but my vocabulary is limited) it was "guts" that brought "H 8" and "S 1" home safely.

Getting back to the question of depth-charges--one may pa.s.s over the little explosive sweep-charges used by the Germans early in the war.

They were more like squibs than anything else. The Zeppelin bombs were noisy, but burst on the surface only, and so were innocuous to a boat below 30 or 40 feet depth. Later on, in 1917, the Germans began to use depth-charges in their destroyers and patrol boats; but these weapons were not only too light for useful results to be expected from them, but were also dropped too vaguely and inaccurately for our boats to have much respect for them.

I will quote some recent cases which refer to the best depth-charges the enemy produced during the war:--

"Midnight, Oct. 2nd, 1918; 'L 15' (Lieut.-Commander Ward): Vessel, apparently T.B.D., appeared suddenly on port beam, distant 100 yards. Dived to 60 feet. Vessel pa.s.sed overhead (turbine engine).

Heard two loud explosions in quick succession."

"7.45 A.M., March 24th, 1918; 'E 44' (Lieut. Venning): Five battles.h.i.+ps (apparently of _Kaiser_ cla.s.s) and a destroyer (the latter zigzagging). Turned to attack on surface. The destroyer turned towards me and fired a white Very's light. His range was about 2000 and the big s.h.i.+ps 4000 yards. All s.h.i.+ps then altered course. 7.50 A.M.: dived at full speed. Hit bottom hard at 64 feet, and proceeded along bottom at full speed. 7.53: one depth-charge exploded astern. 7.55: another depth-charge exploded astern. I stopped engines. 8.5 A.M.: went ahead 6 knots. 8.10: destroyer pa.s.sed overhead, and the sweep-wire was heard sc.r.a.ping over the 'jumping wire.' 9.30 A.M.: eased to four knots. Sounds of propellers died away. Under-water explosions were heard at intervals till 11 A.M."

If this chance had been given, in such shoal water, to a British destroyer screen, the submarine would certainly not have been so calm about it.

There are some first-hand reports on our own depth-charges:--

Submarine "D 7," February 10th, 1918 (Lieut. Tweedy), suddenly sighted H.M.S. _Pelican_ through her periscope. She increased to full speed and went down deeper, altering course from north to west.

"3.48 P.M.: First explosion occurred, loud and violent, but no damage or inconvenience. Very shortly afterwards a second explosion. This was considerably more violent, shattering several lights and flooding the after-periscope. Heavy shock throughout the boat, but no serious damage. Order was given to 'blow externals.' While rising, a third explosion occurred of about the same intensity as the first. On breaking surface made recognition signals...."

The comment of authority on the incident blandly points out that by more accurate judging of speeds, distances, etc., the estimated distance of 150 yards between "D 7" and the second depth-charge could have been much reduced and better results obtained. There is, of course, no hint that the destroyer was to blame in the matter of recognition. In all these cases it is the destroyer's duty to take it for granted that any periscope is hostile, and the comments on these reports usually show some sympathy with the surface s.h.i.+p's natural disappointment at finding she has attacked one of her own side.

On 29th Feb. 1918, submarine "L 2" (Lieut.-Commander Acworth) had a similar experience, which had very little that was amusing about it.

Her opponents were the United States' destroyers _Paulding_, _Davis_, and _Trippe_.

"... I lowered periscope and dived to 90 feet. Gun-shots being heard, I proceeded at full speed to 200 feet, at which depth the first heavy depth-charge exploded, and at the same time the after-hydroplanes jammed hard-up. We now took a tremendous inclination by the stern, the tail touching the bottom at 300 feet.

"Four more very heavy explosions shook the boat. Bright flashes were seen in the boat, and she was at an angle of 45, bow up. We were unable to correct this trim with the forward hydroplanes, so I gave the order to blow Nos. 5 and 6. This order was promptly obeyed, and the boat slowly commenced to rise, but at a tremendous angle. On breaking surface three destroyers opened a hot fire on us at a range of 1000 yards--one shot striking the pressure-hull just abaft the conning-tower. Recognition signals were made, and White Ensign waved, when firing ceased."

The American destroyers had sighted the top of the conning-tower of "L 2" as she "broke surface," diving in the rough swell. The submarine authorities comment on the incident as follows: "In view of the small amount of conning-tower exposed and the distance at which it was sighted, it is submitted that these vessels made a most remarkably efficient attack."

It is curious that both British and German submarine officers have the same opinion of aircraft as anti-submarine weapons. Our boats looked on Zeppelins as scouts only--as bombers they could be practically neglected. The German seaplanes became dangerous towards the end of the war from the fact that they carried machine-guns: their bombs were trifling affairs. But any aircraft might locate a boat on patrol, and then the boat might just as well not be there, because no target worth a torpedo would be foolish enough to come within range of her, once the warning had been given. Similarly, the Germans stated that what they disliked most in the Irish Sea were the airs.h.i.+ps and seaplanes that were always pa.s.sing over them. They did not fear the bombs these craft carried, but they did dislike having their own position continually reported to the surface patrols, who, as a result, gave them little rest. There is no doubt that the morale of submarine personnel is much affected by continual nerve-strain. For a man to be able to keep up a long patrol and retain his full faculties he must have some part of the day or night free from worry, even if it is only a couple of hours during which he may feel safe from aggression. In the Heligoland Bight it was a tremendous relief to be able, at the end of a hara.s.sing day, to sink to the bottom and retire from the war for a few hours. The sense of relief and relaxation was extraordinarily grateful. It must be remembered that, even if nothing is in sight through the periscope, the officers and crew have still at the back of their minds the recollection of the number of boats which have been lost, presumably by mines, in the Bight, and of whose fate no explanation has ever been forthcoming. If a submarine can be given no rest, day or night, from the ever-present fear of death, she is soon in a state when over-tired nerves will infallibly commit some mistake which will make her an easier victim. In this connection aircraft may be described as an infernal nuisance. You never can be certain if they have seen you or not, and the tendency is to take it for granted that they have done so.

If you are then in enemy waters you must be on the _qui vive_ for being hunted by the usual methods; if not in actual enemy local waters, you feel that your chance of a target has gone for the day, and that even if a target does come by, she will be well protected and on the look-out for periscopes. On the whole, however, the German aircraft did not do much, and they certainly did not make the British submarines nervous. The game, in fact, rather worked the other way, as far as the Zeppelins were concerned. It was easy to work out (the German being of a methodical and regular nature), from the continued reports of our boats of the times and rendezvous of Zeppelin patrols, just where a Zeppelin might be expected to be found, and the resultant action by our own aircraft brought two of these huge sea-scouts down in flames. It should be mentioned that our boats are supplied with "sky-searcher"

periscopes, which can either sweep the horizon or swivel so as to watch the motions of anything from the horizontal plane up to the zenith. A seaplane is a different proposition. Submarine "C 25" was attacked by five German seaplanes off Harwich on 6th July 1918. Several thousand rounds of machine-gun ammunition were fired at her and a number of bombs dropped. The bombs, even when they hit direct, did very little damage, being of probably not more than 10 lb. weight. The incendiary bullets from the machine-guns, however, killed the captain (Lieutenant Bell) and five men, who from a position on the bridge were trying to drive off the enemy with a Lewis gun. As the incident occurred close to the English coast, the success of the enemy on this occasion may be put down to the fact that the submarine, under the impression that the aircraft must be friendly, made no attempt to dive until the bursting of a couple of bombs on her hull rendered her incapable of submerging.

Seaplanes have the advantage of attack in that they are able, on sighting a submarine on the surface, to come down volplane from the clouds, the first intimation of their presence being given by the roar of their engines as they level off close alongside. Submarine "E 4" was nearly caught in this way once near Hiorn's Reef. She had just come to the surface for a look round and to get lat.i.tude observations.

Lieut.-Commander Julian Tenison, her captain, was sitting comfortably on the bridge-rail while the tanks were being blown below in order to give the boat convenient buoyancy. The seaplane had dived down on him in the path of the sun, and the _rip r.r.rip-room_ of the switched-on engines 200 yards away brought Tenison to his feet with a jump. He realised instantly that there was no time to get under before the enemy could let go his bombs--the change from blowing to flooding tanks would take far more than the usual 30 seconds which suffices to submerge a boat under normal conditions. He reached down, pressed the b.u.t.ton of the "diving-hooter," and then stood up and enthusiastically waved his cap to the seaplane pilot. The pilot shot past at a few yards' range, giving a half-hearted wave in return, as a man responds to a perfect stranger who salutes him in the street. As the machine pa.s.sed, Tenison jumped down below and pulled the lid to: the short delay had been enough for the blows to be shut off and the vents to be thrown open, and the boat was starting under. Through the periscope, before the hull was down, he saw the machine turn ahead of him, coming round on a wing-tip, and evidently now fully awake to the situation.

The boat drove under, and at eighteen feet three bombs burst on the surface in quick succession over the forepart of the hull. Being the usual small bombs no damage was done, but had they struck the hull while it was still above water the chances for "E 4" would have been poor. It is quite possible that the German pilot has not to this day seen anything amusing in the incident.

Although Zeppelins did not, as far as is known, cause our submarines any damage by bombing or other aggressive action, they were a great nuisance, in that they often caused delay to the boats on pa.s.sage to their areas. One had to dive in order to avoid being reported; and it was aggravating to be kept under by a great silver brute which appeared to have nothing better to do than to cruise aimlessly round in a five-mile circle overhead. It was therefore a great relief when a chance occurred for a boat to get her own back and square accounts a little. On the 9th May 1916, at 9.30 A.M., "E 31" (Lieut.-Commander Fielman) observed a Zeppelin in difficulties, apparently sinking towards the water. The airs.h.i.+p was "L 7," which had been under fire, and had received damage from our light-cruiser forces. She settled down till the gondolas touched, and started to "taxi" towards home. "E 31"

rose ahead of her and opened fire with a bow gun. On the third hit the Zeppelin burst into flames, and disappeared in thirty seconds or so.

Seven survivors were picked up, and "E 31" dived again and proceeded on towards Harwich. At midnight a German four-funnelled cruiser was seen coming right at them, and barely 200 yards away on the starboard bow.

Lieutenant Love, R.N.R., officer of the watch, acted swiftly. He put the helm hard a-starboard and rang the diving alarm. The cruiser was pretty smart in her actions also. She ported her helm to ram; but "E 31," being inside her turning circle, was missed by fifty yards. As she pa.s.sed, she switched on searchlights and opened "independent fire"

(_i.e._ "fire as fast as you can and as often as possible at whatever you can see of the target"). One 59 sh.e.l.l hit the submarine's forward superstructure two feet above the hull, but did not explode. As the gauge reached sixty feet, "E 31" heard the cruiser pa.s.s overhead. It is understood that the seven Zeppelin prisoners observed, as the boat levelled off at the bottom to wait for quieter times overhead, that it was a rotten war anyway, and that they would be glad when it was over.

One thing which the submarine service in war-time seems to engender, is extraordinary impudence towards the enemy. This state of mind is based partly on contempt and partly on complete confidence in one's crew and boat. At the beginning of the war it was a marked feature in the work of our boats; but later on, when the watching patrol was established, things had to be taken more seriously, because it was inadvisable for the presence of boats in the patrol areas to be known of by the enemy.

There are several instances which will ill.u.s.trate the mental att.i.tude of our officers towards their foes before the patrol-ring was formally established round the Bight. I would instance "E 5" (Lieutenant-Commander Benning), who, on the 16th August 1915, seeing a German destroyer about four miles off, near the mouth of the Elbe, came to the surface and opened the conning-tower hatch "to attract her." The attraction was apparently sufficient, as the destroyer charged at full speed. "E 5"

dived, turned outwards, and then, swinging in again, fired a torpedo as the enemy rushed past. The destroyer, the sea being very smooth, saw the firing-splash, and, by putting her helm hard a-port, dodged the torpedo. She then ceased to be "attracted," and departed hurriedly.

The island of Heligoland has been a wonderful source of inspiration to the newspapers throughout the war. It has been described as being the strategic pivot of the North Sea, and as the heavily-fortified base of the High Sea Fleet. The importance of the place may be better gauged if it is explained that it has just about the fighting value that an old battles.h.i.+p would have if moored out head and stern on the shoal, but with the disadvantage of the guns being unable to obtain "all-round"

training. The harbour has only enough depth of water for trawlers and torpedo-boats; the High Sea Fleet couldn't get in if it wished to. If we had had possession of it instead of the enemy, we would have lost heavily in trying to keep it. Our position there would have been rather as if the Germans had tried to hold the s.h.i.+pwash Light-vessel off Harwich; it would have been too exciting for words. At any rate Heligoland is not a submarine base, and as long as there are far better bases on the mainland, it is not likely to be used for that purpose. I have heard it stated that U-boats use the island as an "advanced port"

which allowed them to shorten their journeys out on patrol. Such use of the island would shorten a voyage by some thirty miles, but when the voyage implies a mileage of perhaps 6000, a matter of thirty is hardly worth noticing. From our submarines' point of view the place was useful to take bearings of and to fix position on, and except for navigational purposes they took little interest in it,--so little, in fact, that "E 2" (Lieut.-Commander Stocks), when she ran aground there, barely referred to the incident in her log. Submarines are delightful things to navigate in. A surface s.h.i.+p has a certain fixed draught, and she has to keep that figure always before her mind's eye. A submarine never approaches the coast or navigates in thick weather, unless trimmed down until she is drawing several feet more than usual. When in this condition a meeting with the sh.o.r.e does not matter much. If she slides up on the land, she blows her tanks and slides off again, so that grounding in a submarine comes to be looked on as a very ordinary and matter-of-fact sort of business. "E 2" was cruising in a fog in the Bight, and was trimmed down in case of accidents, when she came well on to the beach under the western cliffs of Heligoland,--she was so close to the gun-emplacement that the guns could not be depressed enough to bear on her, which was certainly fortunate. The Germans were very agitated. They ran about, hailing and bellowing at her and working themselves up to a great state of mind. "E 2," however, blew her tanks out and backed off; as she did so a torpedo-boat arrived and opened fire on her. "E 2," finding salvos falling close aboard of her, decided that there was hardly time to turn round and depart submerged in the usual way, so she continued to go astern, and, reversing the hydroplanes, dived off backwards--none of the shots. .h.i.tting her; and, in fact, the accurate estimation of deflection by the torpedo-boat, in view of "E 2's" squid-like action, must have been difficult.

A matter that caused a good deal of amus.e.m.e.nt to our submarine service throughout the war, and which probably made the Germans laugh also, was the great "petrol myth." It is a story which is at least as good as the Russian troops that travelled through England. Every part of the coast was reported to be the scene of mysterious rendezvous between U-boats and German spies, and at these meetings petrol cans changed hands--the U-boats taking the full tins, and the spy, presumably, insisting on getting the empty tins back, or else the sum of two s.h.i.+llings each in lieu. Heaven knows who invented the story, but it sounds like a "leg-pull," which had got out of hand and spread like a disease. For one thing, submarines don't use petrol--they use Diesel engines and heavy oil. For another thing, a submarine, depending on her size, carries from 30 to 300 tons of fuel in her tanks. If a wicked German spy was kind enough to take a couple of tins of petrol aboard a U-boat, he would, presuming that the captain owned a motor bicycle, be gladly welcomed; but his gift would hardly add to the radius of action of the boat. A submarine can keep the sea longer than a surface s.h.i.+p can, and has a much longer radius of action--the heavy-oil engine is economical and efficient, and such things as special fuel-carrying tenders or submerged fuel-tanks are unnecessary luxuries. It is true that U-boats used on occasions the little creeks and bays of Scotland and the Orkneys to shelter in, and in fact one boat landed some men on one of the smaller Orkney islands and stole half a dozen sheep; but such exploits are more matters of amus.e.m.e.nt than business. Our boats in the Bight used to shoot duck occasionally (and the Frisian Islands are a paradise for wild-fowl shooters in January--the birds are to be seen in thousands at a time), and if there had been anything else worth stealing on the very uninviting and ugly German coast, I'm certain that nothing but the innate honesty of our submarine officers would have prevented them from getting it.

As for the German spy scares, the Germans had a similar experience at the beginning of the war. Quite a number of perfectly good Huns were shot by enthusiastic amateur sentries, and the patriotic citizen felt it a duty to let off what firearms he had at any car which drove fast after dark, or which showed strong lights. The rumours of communication between U-boats and spies on the coasts of Great Britain continued throughout the war, while all the time the real German spies continued to send their reports by letters, and the N.I.D. continued to open the letters and subst.i.tute their own versions of the news. The fact is, very little information got away to Germany except through the newspapers. This country has the disadvantage, from an enemy spy's point of view, of being an island; Germany has a neutral country on each side of her: as a result, when the Armistice came, the Germans could give us little news about their Navy--everything of interest about it was already known at our Admiralty. There were some other widely believed "facts" about submarines which are dying a very slow death. They mostly came from the brains of the Press naval correspondents. One was that a submarine could not keep the sea more than a day or two. Of course, long before the war, even our little C-cla.s.s boats were spending ten days on manoeuvres. The first long trip of the war was "E 11's" thirty-one days in the Sea of Marmora. Again, it was solemnly proved when the _Hogue_, _Cressy,_ and _Aboukir_ were sunk, that more than one U-boat must have been present, "as a submarine cannot reload under water." I am mentioning these things, as it has been a matter of surprise to the submarine services of all navies that the boats have been looked on as new arrivals, and as weapons which were completely new and untried in 1914. The fact is, the submarine "arrived" long before the war, and has been used in annual manoeuvres in our Navy since 1904. The first successful submarine attack, it should be noted, was by the Confederate submersible which sank the _Housatonic_ in the American Civil War--some fifty-seven years ago.

There is no doubt that the German submarine service had everything in its favour. They had targets in plenty, in view of the fact that our fleet kept the sea practically continuously at the beginning of the war, and for about 25 per cent, of the time during the later stages.

The coasts of these islands are ideal for submarines to work round; the sh.o.r.e is mostly steep-to, and the high landmarks make navigation easy.

The German coast is low and difficult to see; it is guarded by outlying shoals and islands, and the visibility off-sh.o.r.e is usually poor; the numerous rivers emptying into the Bight make diving conditions bad at times owing to the alternate strata formed of fresh and salt water.

Altogether, the two sets of conditions used to make our submarine service often wish that the two belligerent navies might change fleets, bases, and strategic problems, and so give our boats a chance to show how a weaker navy should carry out a war of attrition. Such a war could undoubtedly have been fought very much more efficiently by the enemy if he had concentrated on wars.h.i.+p-targets only. There is a clause in a German instructional book for submarine officers which directs the young idea to "never attack a man-of-war if there is chance of usefully attacking commerce" (or words to that effect). That sort of order is an admission of defeat, as although the axiom, that "the object of strategy is the defeat of the main forces of the enemy," was, I believe, laid down by Napoleon, it is as old as the time of the first battle between tribes of Palaeolithic men. A defeat of the Grand Fleet by direct naval action would have given Germany domination of the world; but the works of the late Admiral Mahan do not seem to have been understood in Berlin.

The great German commerce-destroying submarine navy is now no more. Its fate will be a reminder to strategists of the future that a _guerre de course_ never won a war yet, and that there is no easy road to victory. It may be easier "to attack merchant s.h.i.+ps rather than men-of-war," but if the result is the surrender of one's own Navy, the policy seems hardly profitable.

However, our own submarine strategy was, in spite of the enemy's example, kept on correct lines; our leaders saw the possibilities and the future of this type of craft far more clearly than did Admiral Tirpitz. Our boats were built and used for military purposes only, and their work was all part of the main strategical policy of the Navy.

IV