CHAPTER XIII

P-BOATS AND AUXILIARY PATROL

The trawler is a fishing-boat by birth, and a mine-sweeper by

necessity; the destroyer is first of all a fighting ship, and a

protector of the weak. They will both kill a submarine when it comes

their way; but we have ships--classes of ships--whose whole profession

and occupation it is to hunt the pirate. Their methods differ as the

methods of two kinds of hound. The Q-boat hunts slowly and craftily,

the P-boat and the Yacht Patrol by speed, the ram, and the dreaded

depth-charge. It is unnecessary to give the technical description of

either class. A yacht is a yacht, and for a P-boat you may imagine

a long slim boat, with fine lines and a rather low freeboard, three

officers, a surgeon, and some fifty-five men--depth-charges round the

stern and a gun or two, but no torpedoes.

In September 1917, H.M.S. P. 61 received orders to pick up in a certain

roadstead the oiler _San Zeferino_ and escort her to her destination.

It was no easy job; the _San Zeferino’s_ steering gear was defective,

she could not zigzag; and in the misty showers and very dark weather

prevailing, her course was embarrassingly original. But she was a

valuable ship, and P. 61 meant to get her in if it could be done.

The sea was moderate, but visibility was no more than three-quarters

of a mile. P. 61 kept on the convoy’s starboard bow and only about

two cables ahead, zigzagging at seventeen knots. At three minutes to

six in the morning, the oiler was suddenly observed to be settling

by the stern. Lieut.-Commander Frank Arthur Worsley, R.N.R., on the

bridge of P. 61, had heard no sound of explosion, and no one in the

ship had sighted a submarine. The Commander knew, however, that in the

thick mist and with a head wind and wash against him, this was natural

enough. He immediately circled twice round the convoy, signalling to

her: ‘Have you been torpedoed?’ With some difficulty she replied ‘Yes,’

and also that she had sighted the submarine.

Lieut.-Commander Worsley ascertained that the _San Zeferino_ had her

boats swung out and was in no immediate danger. He then reduced speed,

in order not to betray his presence to the enemy, and started off

north-west on the chase. Inevitably he soon lost sight of the oiler in

the fog, and was obliged to turn in order to regain touch. He found the

convoy still heading on her course, though her engines were wrecked;

crossed her bows, and passed down her port side and under her stern.

Directly P. 61 was clear, Lieutenant J. R. Stenhouse, R.N.R., on her

bridge, sighted the enemy about half a mile away on the starboard beam,

heading westward at nine knots.

Action stations had already been sounded, and fire was now opened from

the port 12-pounder gun. One round of common shell was sent into the

submarine, striking her just before the conning-tower. But a gun action

was not the final object of P. 61. Lieut.-Commander Worsley had got his

engines up to full speed as he came on, and saw that the enemy could

not escape his ram. So sure was he that, after three minutes’ run, he

deliberately stopped both engines, so as to let the ship’s bows drop

deeper in the water and make a better hit.

The engines stopped, the bows sank two feet, the order ‘Stand by to

ram’ was heard, and P. 61 struck the enemy stem on, on the port side,

just abaft the conning-tower. Her speed at the moment was fully 20

knots, and the impact was severe; the submarine rolled over as the

stem cut into her; and when P. 61’s stern was just above her, a very

violent explosion took place, giving Lieut.-Commander Worsley, for an

instant, the nightmare that he had been torpedoed by another U-boat in

the moment of victory. He was quickly reassured. P. 61 had suffered no

damage. But round the place of collision the sea was boiling with foam;

immense air-bubbles were coming to the surface in rushes, and continued

for some minutes after the explosion. There was oil upon the surface,

and in it two men struggling. Lifebelts were thrown to them, and boats

put out. One of the two was rescued and proved to be Ober-Leutnant

Alfred Arnold, the commanding officer of the U-boat--the fifth upon

the list of 150 published by the British Admiralty. The submarine

was U.C. 49 and lies at the bottom in forty-seven fathoms. The _San

Zeferino_ was taken in tow by P.61 and came safely in after an arduous

twelve hours--an admirable piece of work. Lieutenant-Commander Worsley

received the D.S.O., Lieutenant Stenhouse the D.S.C., and two petty

officers the D.S.M. for excellent steering and gun-laying.

On this occasion the P-boat had left her patrol duty for the moment,

to act as escort. This was not the case with P. 57, who had a similar

success in November of the same year. In the dark of early morning,

about 6 o’clock, she had just challenged and examined by searchlight

a vessel which turned out to be a friend, when the forward look-out

reported ‘Buoy on the port bow!’ Course was altered to examine this

buoy, and on approaching it both Lieut.-Commander H. C. Birnie, R.N.R.,

in command of P. 57, and Lieutenant Isdale, R.N.R., his officer of the

watch, simultaneously perceived it to be a large U-boat heading due

west and only 200 yards distant.

There was less than no time to be lost. Orders were given and obeyed

instantaneously. The engines leaped to full speed as the ship came

round sharply to port and steered straight for the enemy. In less than

fifteen seconds the crash came--a heavy impact, at seventeen knots, on

a point just before the U-boat’s conning-tower, very nearly at right

angles. P. 57 cut her way right through, and as she did so the order

for the depth-charges reached the officer of the watch. The first

charge was released with great promptitude and precision as the damaged

submarine passed under the ship’s stern. P. 57 turned sixteen points

and came back over the spot, when a second charge was immediately

dropped and a buoy put down.

An hour and a half afterwards Lieut.-Commander Birnie returned, after

verifying his position, and found very large quantities of oil rising

about fifty yards from his buoy. He dropped a third depth-charge and

another buoy, and patrolled the neighbourhood all night. Sweepers

arrived next day, located the U-boat with a bottom sweep in thirty

fathoms, lowered a depth-charge on the sweep wire and blew the wreck

up. For this ‘speedy and faultless attack’ Lieut.-Commander Birnie

received the D.S.O., Lieutenant Isdale the D.S.C., and two A.B.’s the

D.S.M.

This feat was a remarkable one, for it was performed in almost total

darkness; but success was achieved in even more difficult circumstances

by P. 51 towards the end of March 1918. It was 8.30 in the evening; the

sea was calm under the moonlight, but great spaces of it were darkened

by cloud shadows. The commander, Lieutenant William Murray, R.N.R., was

in the chart-house, and Mr. Whittel, the gunner, on watch, when the

signalman on the bridge reported a submarine on the surface, about one

point before the port beam and less than 300 yards away. Orders were at

once given to increase to full speed, and starboard the helm to ram.

As the ship swung, the commander reached the bridge and took charge.

He could see the enemy’s wash and bow wave. Then she appeared more

distinctly as a large U-boat, 350 feet long, with a huge conning-tower

and about two feet of freeboard showing. P. 51 continued to swing into

the desired position and the moment for a successful ram seemed to have

arrived. Then occurred one of those sudden and unforeseen accidents

which try a commander’s presence of mind and decision to the utmost.

To strike the U-boat fair it was, of course, necessary to put the helm

over as soon as P. 51’s head had swung far enough to be pointing for

her, and so steady the ship on her course. But this order could not be

obeyed--the helm had jammed. Lieutenant Murray knew that to struggle

with it could only at best result in a bungling collision which would

injure his own ship rather than the enemy. He made a lightning act of

renunciation, kept his helm a-starboard and swung completely round,

passing close along the submarine’s side and then turning altogether

away from her. The helm was soon afterwards found to be acting again;

but in the meantime P. 51 had lost sight of the enemy.

She dashed westwards, and in two minutes sighted the U-boat again, a

mile away on the port quarter. A new ramming attack was immediately

planned, and the guns were ordered to open fire; but the submarine

dived completely before they could pick her up in the uncertain light.

In ten seconds Lieutenant Murray had brought P. 51 over a patch of

oil which betrayed the spot where the U-boat was submerging. Three

depth-charges followed her down. The first two produced the usual

upheaval of water, but the third blew a quantity of wreckage into the

air, of many shapes and sizes. P. 51 continued to circle around, and

ten minutes later three shocks were felt below in rapid succession.

Nothing more was seen, nor could any movement be heard on the

hydrophone.

The official verdict was one of ‘Probably sunk,’ the evidence being

considered good but inconclusive. It was, however, afterwards

supplemented by final proof, and the case was re-marked ‘Known.’

Lieutenant Murray accordingly received the D.S.C. and two of his men

the D.S.M.

Very little information has been given to the public about the Yacht

Patrol; but it is certain that, when all is known, the history of this

service will be eagerly read. There is a fine Elizabethan air about

the gift of a ship to the Navy by a private owner, and we can imagine

how keenly the giver would follow the career of his own boat, longing

to command her himself, and glorying to catch her name now and then

through the gales and rumours and gunfire of the seas, where she is at

last flying the white ensign. Such a gift was the _Prize_, who with the

heroic Sanders, her Commander, lies fathoms deep, and still unknown to

many; but in time to come she will be remembered with _Farnborough_,

_Pargust_ and _Dunraven_, and her owner’s name will stand in a unique

and honourable list.

Among the victories of the Yacht Patrol, one of the most timely

and decisive was that of May 26, 1918. H.M. Yacht 024, _Lorna_,

Lieutenant C. L. Tottenham, R.N.R., was on patrol that day in Lyme Bay,

intercepting east-bound traffic, and keeping an eye at the same time

on the activities of a U-boat off Portland Bill, whom she intended to

deal with when opportunity should offer. Soon after 8.0 in the evening,

she spoke two ships in succession, the _Jabiru_ and _War Cross_, and

ordered them both into Weymouth Bay, warning them at the same time

of the enemy submarine. At 8.50 P.M. a lamentable signal came back

by wireless--‘S.O.S., S.S.S.S., 2 miles S.W. of Portland Bill, ss.

_Jabiru_, torpedoed.’

_Lorna_ immediately proceeded at full speed, to look for the sinking

ship and give what assistance might be possible. But, at 9.14 P.M., she

intercepted the reassuring message--‘Proceeding to port, torpedo missed

fire.’ Lieutenant Tottenham at the same moment saw that _War Cross_,

which had parted only twenty-five minutes before, had now turned and

was steering westward, having evidently also received the S.O.S. signal

from _Jabiru_. He altered course and spoke her accordingly, advising

her captain to lay the land, and endeavour to round the Bill inside the

U-boat’s operating radius. He also offered to go with him as escort,

but _War Cross_ pluckily declined, thinking he could do better by

waiting for darkness and running in by himself.

Lieutenant Tottenham left him and searched the horizon for another

smoke streamer. His game was to meet every ship which came that way and

by closing them one after another, in the falling dusk, to ensure being

within striking distance when the U-boat should make the next attempt

at assassination. The only success which could satisfy him would be

the destruction of the enemy before he had had time to strike the

‘live bait’--an ambition which showed great nerve, and a grasp of the

principle of the offensive in war. It would have been easy to make all

merchantmen give the Bill a wide berth, and perhaps save the next ten

of them thereby; but the pest would be active again to-morrow, in the

same place or another--destruction, at all risks, is the only cure for

U-boats.

Before long another ship was seen approaching from the south, and

_Lorna_ at once headed towards her. But after steaming for about three

and a half miles on this errand, Lieutenant Tottenham perceived that

the new-comer was already in good hands, or would soon be so--the

armed drifter _Evening Primrose_ was closing her, evidently with

the intention of acting as escort. At this moment a fresh ship came

in sight, approaching the Bill from the west. Lieutenant Tottenham

instantly altered course and made straight for her.

At 9.55 P.M., when he had hardly steadied _Lorna_ on her new course, he

sighted the periscope of a submarine. It was steering due west, almost

directly towards the approaching steamer, and seeing the position of

the two ships, and their converging courses, he assumed rightly that

the enemy was manœuvring for an attack of the usual kind, without

warning. Of _Lorna’s_ presence the U-boat was apparently quite unaware,

though she was now only 150 feet distant and rapidly coming up on the

starboard side of the periscope.

But aware or unaware, the pirates were doomed--caught in the act, and

helpless as they had thought to find their victim. _Lorna’s_ helm flew

over to starboard. The ship swung, in one swift curve, through the

intervening fifty yards, and in two minutes from sighting her enemy

she was right over the periscope. The U-boat dipped, but far too late;

as _Lorna_ passed over the spot a shuddering jar was felt throughout

her--her keel had struck the conning-tower, but so lightly that the

pirates below probably thought they had escaped destruction for this

time. A moment later they knew their error. Down came _Lorna’s_ first

depth-charge, set to fifty feet. The helm went over still further to

starboard, and the second charge dropped about fifty feet from the

first, and at the same depth.

Both charges detonated, and it was impossible to believe that they

could have failed to destroy or seriously cripple the U-boat. They must

have exploded in the most dangerous way possible, just alongside and

underneath the target, where the resistance would be the maximum. The

proof came a few moments afterwards. While continuing his circle, in

order to pass again over the spot and make sure, Lieutenant Tottenham

suddenly sighted four objects in the water among the disturbance caused

by the two explosions. He turned and steered direct for the place,

expecting to find wreckage of some kind; but on arriving, at full

speed, he saw an astonishing tumult of water, caused by an upward rush

of air, gas, and oil, which showed beyond doubt that the U-boat was

immediately below.

The next moment was a terrible one. As _Lorna’s_ third depth-charge

dropped into this seething cauldron, cries of ‘Kamerad!’ were heard,

and those on the yacht’s deck, looking back as she raced over, saw

the new explosion hurl into the air the bodies of four men, who for a

brief instant had been survivors from the sunken U-boat. Lieutenant

Tottenham eased down and returned to pick them up. One was found still

crying ‘Help!’ and ‘Kamerad!’ but the other three were already dead,

from the effect of the explosion, or of the thick mass of oil in which

they were submerged. About the unhappy prisoner there was no doubt. He

was seriously injured internally, and was gone in three hours’ time.

He lived and died in a cruel and cowardly business, but if care and

kindness could have saved him, _Lorna_ would have brought him into port

and been glad to do it.

This submarine was U.B. 74. She was a week out, and had already sunk

three ships when she was caught. Her commander was Ober-Leutnant

Schtiendorf, and his name will be found in the list of the 150, for his

case was among those marked as ‘Known.’

One more patrol story must be added--a story in some ways unique,

with mysterious details which haunt the imagination, but can never be

finally explained. The vessels of the patrol on this occasion were

not yachts, or P-boats in the strict sense of the classification. One

was the _Sarba_, an armed trawler like those we have already met,

and commanded by Lieutenant George G. Astbury, R.N.R.; the other was

a small boat, with no name but T.B. 055, commanded by Gunner T. H.

Britton.

On the morning of October 31, 1917, T.B. 055 was accompanying the

trawlers who were engaged in sweeping an important channel outside a

British harbour. At 3.0 P.M. when the sweep was practically over, Mr.

Britton noticed an oil track on the surface of the channel. This was in

itself an astonishing sight, and not to be accounted for in a moment.

How could a submarine have ventured into a channel only thirteen

fathoms deep, and daily swept by a highly efficient force of trawlers?

And for what possible reason could she be lying there on the bottom at

3 o’clock in the afternoon, in a position where she could use none of

her weapons, and was certain to be found and attacked?

Mr. Britton went into the oil track to investigate; stopped his boat

and listened on the hydrophone. His astonishment was redoubled--the

submarine was there, and not only there, but busy and audible. The case

was so extraordinary that he and his trained hydrophone listener took

counsel together and classified the sounds they heard. First there were

the usual ‘water noises’; these were continuous and perfectly familiar.

Secondly, there was an almost continuous high-pitched sound, somewhat

similar to that of a turbine engine running. Thirdly, at intervals of

a few seconds, came a noise as of knocking or hammering upon metal;

the speed of the tapping varied from slow to fairly rapid blows.

Lastly--and this was the most unexpected and mysterious of all--on two

occasions there was audible, over all the other noises, a sound as of

wireless letters on a high musical note.

For three minutes these sounds were heard, noted, and compared.

T.B. 055 was then taken forward about 200 yards, to the end of the oil

track, and the hydrophone was used again. Precisely the same sounds

were heard, except that this time the musical note, as of a wireless

message, was not repeated. Mr. Britton had no desire to lose time; but

he was not troubled with nerves, and he was determined to make sure of

his evidence. He took precautions to stop all ship’s noises. The fact

only became clearer that the sounds below came from a live submarine.

What her crew were doing no one could know; but she was there for an

evil purpose, and she must pay the penalty.

The oil was still coming up in a visible thin stream from below the

surface. T.B. 055 dropped a Reindeer buoy with moorings, to mark the

spot exactly, got under way and came back over the position. As she

passed, a depth-charge was dropped. The tide was fairly slack at

the time, and there was every reason to believe that it found the

target. Mr. Britton returned to the spot once more. The volume of oil

rising had now increased, and a strong smell of oil fuel was noticed,

which had not been there before. The blobs of oil which now came to

the surface had brownish air-bubbles and froth among them; in the

hydrophone, nothing was to be heard but the ordinary water noises.

It was now 3.35 P.M., and the armed trawler _Sarba_ was seen

approaching. Mr. Britton reported what he had been doing to Lieutenant

Astbury, who at once stopped his own engines and used his hydrophone.

Then, as he too could hear no sign of life, he took a sounding, found

sixteen fathoms and a sandy bottom, and decided that the enemy must

be still there, alive or dead. Accordingly he steamed clear of the

position, turned and came back over it at full speed. He determined to

set his depth-charge for eighty feet, in spite of the shallowness of

the water, because, with the boat on the bottom at ninety-six feet,

he would be absolutely certain of getting a very close explosion. The

charge detonated, and he returned at once to the spot. Large bubbles of

air and quantities of oil were coming up, and within a short time the

oil was covering a very wide area. Sarba stood by all night, using her

hydrophone frequently.

It was now evident that the enemy was dead; but the more the

circumstances were reflected upon, the more difficult it was to explain

them. Next morning, when T.B. 055 had ‘proceeded to sea in accordance

with programme,’ Lieutenant Astbury, in _Sarba_, was left alone, with

nothing but two buoys and an oil patch to give so incredible a story

any kind of reality. He got out a sweep wire with a sinker of 1¾

cwt. and took a sweep along the position. The sweep brought up on an

immovable obstruction, and the incredible seemed once more possible.

At 2.0 P.M. arrived the armed drifter _Sunshine_ and T.B. 058. They

found _Sarba_ lying as near as possible in the position where she had

exploded her depth-charge, and where her sweep had brought her up.

They took a ground sweep under her, and their sweep wire also fouled

the same obstruction. _Sarba_, like a faithful dog, remained on guard

during the following night. At last, at 2.30 P.M. on November 2, the

divers arrived.

[Illustration: ‘The diver who first went down found the submarine lying

on her side.’]

Before the day was out, all uncertainty was removed. The diver who

first went down found the submarine lying on her side. When visited

a second time, she had been righted by the tide or some shifting of

weight; but she and all her crew were dead. The main fact was thus

proved; but the mystery remained and still remains inexplicable

and haunting. Possibly the answer, to the first of the two questions

involved, may be a simple one. The U-boat may have got into the channel

in a fog, and finding herself there when the weather cleared, she may

have dived for safety and decided to remain on the bottom till it was

dark enough to steal away. But the sounds cannot be explained to the

satisfaction of those who know most about submarine war. The U-boat

commander must have realised the enormous risk he was incurring, when

he allowed those noises to be made at such an hour of day. He must

have known that the British Patrol is well equipped with hydrophones,

with depth-charges, and with sweeps. Either he had some serious injury

to repair, and no time to wait; or else his boat was completely

disabled at the bottom, and the hammering and other noises were the

desperate attempts of the crew to draw attention in the hope of being

rescued. ‘There is also,’ said the Admiral of the station, ‘the third

possibility, that the boat carries inside her a tragedy that will never

be known.’

Submarine and Anti-submarine · 第 13 / 17 章