Claus Lafrenz

 

     Claus Lafrenz was regarded highly in the Marinekorps Flandern, in which he served, but is not particularly well known otherwise. He had not arrived in Belgium until the autumn of 1916, but through to when he was captured just over a year later, had been very successful.

     He had been born in Burgstaaken, on the Baltic Island of Fehmarn, in 1887: a son of the mayor of Burg and a major landowner. Unlike most of his contemporaries, he was university educated, in Grenoble, France and Edinburgh, Scotland, although he does not seem to have attained any degree. In explanation, the young man had wished to join the Kaiserliche Marine, but his father was against it. So, he was funded for eighteen months travelling in Europe, but on returning home was still adamant about a naval career. Acquiescing, he became a Seekadett in April 1907 at the age of 19 and passed out second in his entry. Incidentally, he was in the same entry (Crew) as Otto Steinbrinck that he served closely with later in the Marinekorps Flandern. After training he was on ‘big ships’, but in 1912 shifted to torpedo-boats in the Baltic and North Sea. Having been a watch officer, in time he became a staff officer for the II Torpedo Flotilla and was at the epic Battle of Skagerrak (known to the British as Jutland). After submarine training, he relieved Steinbrinck in Flanders on 27-28th October 1916, taking command of UB18. This was the first of the improved UB II-class.

     On his first patrol off the Hoofden from November 9th to 11th, Oberleutnant zur See Lafrenz gained no ‘victories’, but six neutrals were searched. Also, Steinbrinck was onboard, supervising Lafrenz on this training patrol. However, in the English Channel from November 22nd to December 5th, Lafrenz, in command proper, was more successful. A tiny French fishing smack, Kendrick, on the 23rd was his first sinking off Le Treport. Nothing more has been found on this.

     A Norwegian steamer, Øifjeld, was the next and more is known about this action about ten miles northwest of Pointe d’Ailly on the 24th. According to the German official history she was carrying coal from England for France. This is at variance with a Norwegian account that states that she was bound for Boulogne, northern France, from Bilbao, Spain, with iron ore. In the late evening darkness, shots were heard and a submarine was seen a mile astern. The first signal made was unclear but understood by the merchantman’s master to stop, which he did. This was followed by the order to ‘abandon the vessel as fast as possible’: the then international flag-hoist A over B. The Norwegians having done so hurriedly and pulled away in two boats, Lafrenz torpedoed her in her starboard side close to where her aft machine-gun was mounted. Those in the lifeboats were picked up by a fishing-boat and a patrol-boat. No one had been seen on the submarine’s bridge, or casing. It looks as if Lafrenz sank this neutral in this way because she was armed. 

     During the morning watch of the 25th an engine defect on a small British steamer, Emlynverne, reduced her speed by half and she strove to make for safety in St. Helen’s Roads, Isle of Wight. At 10.15 a.m., around 30 miles northwest of Cape Antifer, she had to stop though. Unfortunately, in this condition she was intercepted by UB18 that was then two miles astern. Some shots had been fired, but the submarine was not seen until mist cleared. Of interesting note, UB18 had been disguised with a large spritsail, but seems to have lowered it before approaching the Emlynverne’s port quarter. A over B was signalled, but while the crew was abandoning UB18 opened accurate fire on the vessel. The little merchantman succumbed at 10.40 a.m. and the submarine, with sail rigged again, made off towards another steamer. The Emlynverne’s crew managed to get to Eastbourne, East Sussex, after 10 p.m., by their own efforts. Two of them had been injured very slightly by splinters. 

     No further sinkings have been recorded for this submarine on November 25th, but it is known that at 7.30 a.m. on the 27th a shot was heard onboard another Norwegian steamer, Perra and seemingly anticipating the situation, she stopped. In developing his tactics, on UB18 approaching, Lafrenz had T.A.F. run up -  ‘Bring your papers on board’. So, the lifeboat went alongside the submarine and after study of the said documents, Lafrenz declared the cargo contraband. Keeping the papers (for putting before a German prize court), the lifeboat returned to the Perra with a German party that placed two charges onboard. The demolition party having been returned to UB18 and the merchantman’s crew using the lifeboat to abandon ship, on detonation the Perra sank in five minutes. UB18 then towed the lifeboat towards Cherbourg for 45 minutes, before slipping it and diving. They were picked up by a British steamer, Fishpool, at 1 p.m.

     The next merchantman encountered by UB18 was another Norwegian, Børo that was around 20 miles northwest of Guernsey. A warning shot was heard from port at 1 p.m. and a submarine seen half a cable (approximately 100 yards) away: trimmed down so only her conning tower was visible. Surfacing properly, A over B was hoisted and generally, the same destructive procedures were carried out. But, since she was far larger than the others so far, she was scuttled.  Towing the Børo’s lifeboats, they were slipped prematurely after about 30 minutes, as another steamer had been spied.

     It was a Briton, Rhona that had come to the Germans’ attention. UB18 was also seen broad on the merchantman’s port bow about half a mile distant. A shot was fired across her bows and having settled on the A over B flag hoist, the Rhona was abandoned and sunk as previously. On this occasion, perhaps because the survivors were not neutrals, the two lifeboats were left to make for Guernsey themselves. It was not until the following forenoon that they were rescued off St. Peter’s Port, by a fishing-boat. One of the merchant mariners reported that UB18’s forefoot was damaged. Also, the demolition party had removed the ship’s patent log. 

     The next day a tiny French sailing-vessel and a fair-sized Spanish steamer were destroyed. Six more vessels suffered similar fates on the 30th. Two were small French sailing-vessels; one was a Danish steamer; and two more were Norwegian steamers: one of which was the real Aud.

     The sixth was a small British schooner, Christabel that was about twelve miles off Pendeen, on the northern Cornish Coast, during the forenoon. UB18 that was then around half a mile away, may have been disguised with a sail again. On approaching the sailing-vessel, one warning shot was fired across her bow and she hove to. The flag signal that was not understood was thought to have been flown either from the submarine’s periscope, or a small mast on her conning tower. A second shot resulted in her boat going over to see what the submarine wanted! In their questioning of the Christabel’’s crew, Claus Lafrenz was said to have spoken ‘very good English’ and both he and his crew had been ‘civil and quiet in behaviour’. No attempt was made to tow the survivors’ lifeboat on this occasion, as UB18 went off to destroy a large steamship nearby.

     Still in the outer reaches of the Bristol Channel on December 1st, UB18 sank four more small sailing-vessels: two French and two British ketch-rigged fishing smacks. No resistance of any kind was put up by the crew of the E.L.G. during the forenoon, when destroyed about 25 miles northwest of Trevose Head. An action that afternoon was rather different though. In the same area, the submarine was seen about three miles off the T. & A.C. on her starboard bow and having closed to around a quarter of a mile, three rounds were fired: damaging her mainsail. A steamship was also in sight and the submarine opened fire on her, but this was returned and UB18 dived. Surfacing about 15 minutes later, the by then usual attention was then paid on the T. & A.C. – with the predictable results. In both cases, the smacks’ crews made land safely.

     On passage back to her Belgian base and rounding the Scilly Isles, a Norwegian steamer, Skjoldulf, was sunk 26 miles off the Longships Lightvessel on December 2nd. However, Lafrenz also came upon a three-masted schooner later that day. Making a signal instructing her to heave to and firing two warning shots as normal, the sailing-vessel took no apparent notice. Approaching cautiously and prudently, UB18’s casing and bridge was cleared, in case diving in emergency was required. This inexperienced commander had been perfectly correct to be suspicious of the poop superstructure, as panels fell away the vessel’s twelve-pounder gun and seemingly also one of her six-pounders opened fire, while UB18 dived. H.M. Decoy Ship Mary B. Mitchell (Q9) then continued on her way, while Lafrenz attempted, but failed, to torpedo her.

     Three merchant vessels were destroyed by UB18 on the 3rd. One was a Danish steamer, Yrsa, at a time and in a location as yet undiscovered. The other two were tiny British sailing-vessels. The Seeker was a schooner that was said to have been 30 miles northwest of the Les Hanois Lightvessel, Guernsey at 7.30 a.m., when a vessel was observed about half a mile on her port bow with a lug-sail set. Twenty minutes later the sail was ‘dropped’ and the usual routine was carried out. The other was a ketch named Mizpah that was stated as 30 miles south-south-east of the Eddystone Lighthouse, Devon, at 10 a.m. Unusually, UB18 had been dived and surfaced 150 yards on the ketch’s port quarter. The initial flag hoist was taken as a French ensign onboard the ketch. Although A over B has the same colours, it is difficult to see how it could have been confused for a French tricolour. Anyway, a shot overhead concentrated minds and the Mizpah was dealt with in the usual manner.  Some items were removed by the submarine’s demolition party. One was a red ensign that may have been a souvenir, or alternatively, for potential future use as a ruse de guerre. The preserved meat, jam and butter taken was probably because they were, by then, short of food onboard, although it was common practice to supplement their boring diet anyway.

     UB18 navigated the Straits of Dover on the night of December 4-5th. On the surface in moonlight, H.M. Destroyer Llewelyn sighted her and made a depth-charge attack. On the boat diving, she struck the net-barrage, but managed to get free.

     So, having survived his first patrol, Claus Lafrenz had mastered much of the ‘Trade’ as it applied to these small boats. Apart from using a torpedo on the Øifjeld, his expenditure of shells and charges was very measured. Having made his point through warning shots, the crews of these vessels were given minimal time to abandon ship – five minutes. It was mentioned variously that survivors were not even able to take their spare clothes with them. This will have been to minimise the danger of being overwhelmed while destroying his targets and the two-man demolition parties can be seen to have been experienced and skilled.

     Lafrenz’s next patrol, after Christmas alongside, was substantially different and his attitude towards the mariners he encountered was sometimes less gentlemanly. Sailing on December 27th for the South West Approaches, two medium-sized Norwegian steamers (generally known as thousand-tonners), carrying coal from Swansea for France, were sunk four days later. The former was the Flora that was held-up during the forenoon. On this occasion, unusually twenty minutes were given to abandon ship and those in the lifeboats witnessed their vessel’s demise. She was shelled, but because she would not sink, a torpedo was put into her.  The weather was heavy, so the master took the lifeboats back to the submarine and requested to be towed near the shore, but no response was received. Towards the end of the afternoon watch the Eva then came to the attention of UB18. The tone in this attack appears to have been far sharper.

     Another two Norwegian steamers were held up and sunk on 2nd January 1917, while the submarine was operating between 30 and 40 miles southwest of the Bishop Rock. It was late in the forenoon when the Ellik, carrying pitprops, was warned and stopped. On being told that his command was to be destroyed, the merchantman’s master protested about the distance to land and Lafrenz was reported as stating that there was a patrol-boat about five miles away, but that he would tow the lifeboats as close as he could. Possibly through inexperience, UB18 adopted a speed too fast for the two lifeboats and they had to slip their tows. Also, the demolition party stole fresh food from onboard the Ellik and also both of the lifeboats. About seven hours later the Bestik, with a cargo of coal, was also intercepted. According to a Norwegian report, there had been an agreement that the submarine would tow the lifeboats this time as well, but after securing to a cable, they were slipped again. A promise was also said to have been given that UB18 would return and conduct the tow, but after 30 minutes alone the survivors set sail.  All four merchantmen’s crews were adrift for not inconsiderable periods: but there were no fatalities reported.

     On January 3rd there was a brush with another Q-ship, but UB18 had no torpedoes left to make an underwater attack. This is intriguing. If she had sailed with a full load of four, they must all have been expended in finishing off these steamers that were, after all, much larger than most sunk on his first patrol. If she sailed with a lighter load of torpedoes though, a question as to why might be asked.

     While off Guernsey on the 4th a medium-sized Danish steamer, Naesborg, with coal, was sunk. And, a day later ten miles off Ushant, the Daenevirke, another medium-sized Danish steamer carrying coal, was also consigned to the deep: with no fatalities. No detailed information on these two latter attacks has been located.

     To understand Claus Lafrenz’s next patrol, the attacks on the smaller vessels should be divorced from the two large ones. Sailing on January 30th for the Southwest Approaches again, a tiny British ketch, Wellhome, was encountered at the mouth of the River Orne, about 35 miles N.N.W. of Ouistreham (the port of Caen), at 9 p.m. on February 1st. Three or four shells, at a range of two miles, carried away her mizzen mast and shrouds, with other minor damage to her upper deck, but as the demolition party was leaving UB18 a British destroyer hove into sight and this was abandoned: with the submarine diving. So, the sailormen re-boarded their ketch and jury-rigged a sail, arriving in Ouistreham about 8 p.m. the following day. Further westward off Brittany, three small sailing-vessels, Confiante, Goeland and Sainte Marie, two of which had cargoes of coal, were sunk on the 3rd.

     As far as the German official history was concerned, Lafrenz torpedoed an unidentified steamer during the evening of January 3rd, at the ‘western exit of the Channel’ that might have been the Dane, Lars Kruse.  The following morning, before daylight, he also sank a larger steamer with one torpedo that transpired to be the Cerera. She was a Russian, in British service, but on French account, shifting 5,000 tons of coal from Newcastle to Brest for the French Navy.

     The Lars Kruse had been in the service of the Commission for Relief in Belgium, with over 2,300 tons of maize and was about 20 miles off the coast of Ushant that fateful evening. Later, the sole survivor of 18, her chief engineer named Moller (or Möller) spoke of his experience that explained much. He had been asleep when the torpedo struck and did not manage to get into a lifeboat before she sank - in three minutes. Sucked down by the ship, when he reached the surface again, he joined six others ‘clinging to the overturned lifeboat’. Overnight, they died, one by one, but he clung on until 2 p.m. the following day, when he was taken onboard a German submarine. Two hours later, after the usual questioning by the commander that was said to have suggested that the Lars Kruse may have been sunk by a mine, the engineer was put into one of the Cerera’s full lifeboats. The officer that must have been Lafrenz, as it was known that he had also sunk the second merchantman, had promised the Cerera’s master that he would tow these survivors’ boats to shore. But, for some unknown reason they were ‘left adrift’ until 6 p.m., when a French torpedo-boat picked all the survivors up.

     Also, missing from the German official history was an incident that according to a British intelligence report, occurred on February 5th. A transport on trooping duties between Southampton and France, Mona’s Queen, rammed UB18, but the latter was not damaged badly.

      Anyway, even if the neutral nations were not deterred greatly from trading with the British after the newly reimposed campaign of almost entirely unrestricted submarine warfare, there was a dearth of neutral hulls in the English Channel in the spring and early summer of 1917. This can be seen from UB18’s ‘victories’.

      Sailing on February 27th for this boat’s next patrol, she was to operate in the eastern English Channel to the limit of the Isle of Wight this time. Returning to the coastal waters off Cape Antifer, a small British brigantine, Harriet Williams, carrying pitch, was approached at noon a day later. The usual routine of sinking with charges, with minor variations, was carried out. Of interest, the only direct threat came from a single rifle shot. It was noted that UB18 not only looked old, but also ‘very rusty’. Shifting roughly northwest towards the middle of the English Channel, UB18 intercepted a French coal-trade convoy at 9 p.m. on March 1st. The Chatburn, almost grossing two-thousand tons, was the lead collier of five, escorted by H.M. Armed-Minesweeping Trawler Willonyx. Almost on the Chatburn’s port beam at 500 yards, surfaced but trimmed down, Lafrenz sank her with one torpedo that struck midships. Immediately after, two shots were fired at the submarine and she seems to have departed.  All, including two injured, were rescued by Willonyx. This patrol was cut short, as in an attack during the evening of the 4th the steamer tried to ram UB18, damaging her periscope.

     Venturing back out on March 10th, she was to operate off the French coast, particularly in the Baie de Seine. Minutes after 1 a.m. on the 12th, while roughly 27 miles from Cape Barfleur, a small British steamer, Topaz, in ballast and bound from Honfleur for Port Talbot, was torpedoed midships. She sank in four minutes and it was not until the crew was mustered in the lifeboats that it was discovered that there had been three fatalities. They were the second engineer, one fireman and the steward. Two more were injured slightly. The rest of the vessels destroyed on this patrol were small sailing vessels, one Briton, Sir Joseph and four French. Confusingly, three were named Marie Louise.

      Lafrenz’s next patrol, probably after maintenance, but not external painting and possibly leave, was seen in German terms as very successful. Leaving her base on April 28th, UB18 came under air attack from four Allied aircraft, with machine-gun fire and bombs, while approaching the Dover Straits. Returning to her recent area of operations, southwest of Boulogne early on May 1st, an attack on what was assessed as a coastal convoy was carried out. Two torpedoes were fired into the ten steamers that were escorted by French armed-trawlers and perhaps, also motorboats. Two hits were registered, one on the British steamer C.A. Jaques that sank in four minutes, killing three and the other on a vessel unidentified. She was another British steamer, Haslingden, but the torpedo missed.

     At midnight of the 1st, in moonlight, Lafrenz made his next torpedo attack while dived, on a medium-sized, defensively-armed British transport, Juno, just after her master had taken a four-point bearing on Cape Barfleur Light. According to the engineer on watch, the torpedo entered her engine-room on the starboard side, below the waterline, carrying away her propellor-shaft and exited by the port side, without detonating. She sank by the stern in three minutes and there was the one fatality – surprisingly, the steward. The Juno’s survivors witnessed the results of Lafrenz’s attack on another defensively-armed British transport, Tela, at 0.14 a.m. on May 2nd. She was a substantial vessel of 7,627 g.r.t., on French government service, then in ballast and was proceeding at 17 knots when the torpedo struck her aft on her port side at the waterline. Struggling on, she managed to steam another five miles before succumbing, but at least all of her 79-crew managed to abandon her safely. Both vessels’ survivors were rescued by naval craft within hours. Having expended her torpedoes, UB18 was back in her base the following day.

     UB18 was ordered even further westwards the next time she went to sea. Sailing on May 9th, while about ten miles northwest of Le Havre an action began at 3.45 a.m. on the 11th.  It would appear that UB18 began chasing a small British steamer, Tarpiea, stopping her at 4.30 a.m., with the usual routine: resulting in her destruction by charges fifteen minutes later. There are a few complications though. A word in the official German account (Gewehrschüße) can be translated as rifle-shots, or possibly gunshots and in the original British reports, four shrapnel shells were mentioned. And, a second submarine was also mentioned in the British reports.  So, it may have been that UB18 and UB36 left Zeebrugge together and were in company for the first few days, or that they both came to be in the same area in the early hours of May 11th separately. UB36 was lost ten days later. If so, it may have been that UB18 only used rifle-fire and it was UB36 that used her gun. Anyway, the Tarpiea’s crew was picked up, unharmed, by the French destroyer Pertuisane an hour later.

     At noon on the 14th a tiny topsail-schooner, Elizabeth Hampton, was off the southern coast of the Isle of Wight, when UB18 surfaced very close (about 50 yards) then circled around her stern. The schooner’s master, William Tate, put her helm down, but Lafrenz did not consider it necessary to use any physical violence in stopping his target. Items were removed by the demolition party, in the form of the master’s clock and barometer, as well as the ship’s bell and a ‘basketful of provisions’.  Interestingly, the foodstuffs were stated as ‘sugar, peas and quaker oats’. On the Elizabeth Hampton’s destruction, the lifeboat set sail and her crew were picked up by a destroyer about 20 minutes later.

     A day later, a Greek steamer of over 3,000 tons, Panaghi Lykirdopulo, was intercepted, stopped and sunk, west of Roches Douvres Lighthouse, Côtes-du-Nord. On charter to the Italian government, she had been shipping 5,700 tons of coal to Genoa.

     During the evening of the 17th, while north of Cape de la Hague, another small sailing-vessel was sighted at least at a distance of 2,000 meters. Since the crew did not abandon ship, Lafrenz took his boat down to periscope-depth. It was not until she had closed to 200 meters, or so that three men abandoned the sailing-vessel and even although she had a larger deckhouse than usual, Lafrenz did not regard her as suspicious.  Surfacing, she came under immediate fire from a 12-pounder and a 3-pounder. Diving in emergency, UB II-boats being particularly rapid divers (apparently twenty seconds), UB18 sustained no damage. On taking stock, she re-surfaced and engaged in combat with H.M. Decoy Vessel Glen, until nightfall.

     Sailing next on the last day of May, she was, once again, in an indecisive combat with a British decoy-vessel on June 3rd. Although there are significant reported differences in the position that this occurred in the various accounts, it is relatively safe to conclude that this gun-action took place about 20 miles southwest of Beachy Head, East Sussex. Sarah Colebrooke, a small motor-ketch, had been requisitioned and commissioned recently and was operating as the Bolham, or more likely Balham. Near misses were distinctly uncomfortable for the decoy vessel, but one round inflicted ‘considerable’ damage.

     Working westwards, a small Dutch schooner, Cornelia, was sunk west of Jersey three days later. No casualties are known of.

    Three Brixham smacks were sunk by UB18 during the dog-watches of June 8th, seven or eight miles off Start Point, Devon. Becalmed, with visibility reduced due to a haze, they were all out of sight of land. Consequently, there was little that the dozen fishermen could do. In light of recent contact with decoy-vessels, Lafrenz had both the safety of his own command and the control of the fishermen to contend with. It would appear that the first smack to see UB18 was the Ocean’s Pride, when she surfaced one mile to the south: but remained trimmed down until it was determined that these craft constituted no threat.  One shell was fired overhead, another ahead and a third astern of the Ocean’s Pride. On manoeuvring closer and around her another round was put into the smack’s standing and running rigging and it was only at that point that the crew abandoned ship and began pulling away. Lafrenz had long since given up making signal hoists that seem not infrequently not to have been understood. So, it is obvious that in order to have the smack’s boat stop, another four or five rounds were expended. Saliently, as soon as the fishermen stopped, the firing also stopped. Therefore, it is hardly likely that the gun’s crew was aiming at the fishermen, as they thought. The Onward was also in the vicinity and her crew had abandoned rapidly, after two rounds were said to have been fired at her. UB18 went alongside the Ocean’s Pride’s boat and then the Onward’s. The latter was then pressed into service and towed behind UB18 (minus two of the fishermen put onboard the submarine temporarily), for use by their demolition party. On completion, a not dissimilar evolution was carried out on the Torbay Lass that was about three miles eastward. After a round ahead and astern, this smack’s skipper had his crew abandon her, but lie alongside, until a rifle-shot overhead was regarded as an order to pull away: which they did. On the Torbay Lass’s demolition, the Onward’s boat returned to UB18, where the two fishermen rejoined their comrades and the submarine left the scene on the surface going west. All the fishermen were rescued soon after by another Brixham smack, Prevalent and landed back at their base port.

     Yet another Brixham smack, Cariad, was sunk by UB18 that day, slightly later and a few miles to the west of where the Ocean’s Pride and Onward had been drifting along in the marginal westerly swell.  UB18 was first sighted in the east at 7.30 p.m., proceeding slowly. It is worth pointing out that numerous other smacks were also visible to those onboard the Cariad. Three rounds were fired, before she was abandoned. During the interrogation phase, the German officer conducting it was sympathetic to the skipper-owner’s plight. He also said that while he did not know Brixham, he knew Topsham ‘very well’, having been on a coaster for eighteen months. So, he must have been a reservist. Anyway, about fifteen minutes after this destructive routine was concluded, the Cariad’s crew was retrieved by a patrol-trawler and deposited on the Prevalent. Two British torpedo-boats and/or destroyers had also appeared on the scene, asked the Cariad’s skipper where the German submarine was last and then disappeared off into the fog.

     The next day, June 9th, a small auxiliary-powered ketch, Majorie, was sunk by UB18, thirty miles from the Lizard, Cornwall. The submarine had been first sighted at 2 p.m., as she surfaced trimmed down and moved rapidly. Apparently, UB18 opened fire at a range of four, or five, miles. Four rounds were fired every three minutes - 200 yards short, 50 yards over then 200 yards short twice. After the first shot the Marjorie’s master ordered her stopped and boat out. The second seems to have been to make the crew abandon ship, with further encouragement with the third and fourth. As previously, the demolition party liberated various items, including all brass fittings and tools. It would appear that the removal of non-ferrous artifacts was official policy: an indication of shortages for German industry if there ever was one. It was also said that there was an unsuccessful attempt to remove the Marjorie’s auxiliary motor. Intriguingly, it was also claimed that one-hundred cigars were taken by the submarine’s ‘commander’, but it not really known which officer was involved. In the interrogation, questions were asked about the political situation in Britain, with the German officer opining that the war would end with Lloyd George’s fall from power. On releasing the Marjorie’s crew, they were left with bread and water. This will have been of worth as they were adrift for eighteen hours: before being rescued by a patrol-craft of some sort and landed at Falmouth.

     UB18 then returned to base, arriving on June 14th, via the Baie de Seine. According to the German official history, ‘several’ failed attacks were mounted ‘against steamers with escorts of destroyers’ over the nights of the 11th and 12th.

     Lafrenz’s last patrol on UB18 began on June 28th, tasked to the central English Channel, but the only attack shown in the official history was on July 5th. This was in the sinking of a Norwegian steamer, Bjerkø in morning moonlight. Carrying iron ore for Hartlepool, on reaching Gibraltar she had been routed to the French Atlantic port of Saint Jean de Luz. There she joined a convoy escorted by French warships. While approximately seven miles northwest of the Triagoz Lighthouse, in the Côtes-d’Armor, just before 1 a.m. on the 5th, a torpedo tore into her port side aft: sinking her in thirty seconds! The only survivors were her master, second mate, third engineer, a Danish seaman, a Chinese mess boy and a Greek fireman that were rescued by a French patrol-boat and taken to Cherbourg. All sixteen others perished.

     Following an apparent audience with Kaiser Wilhelm II and promotion to Kapitänleutnant on August 20th, Claus Lafrenz took command of UC65 from Kapitänleutnant Max Viebeg, on September 4th. She was a UC II-class minelaying boat that of course, also had gun and torpedo armament.

     Lafrenz’s first patrol on this boat was to the English Channel and also further west into the Atlantic. In all likelihood, he will have relied on the navigating warrant officer, Steuermann Gräfe, in positioning the boat for minelaying.  Sailing from his Belgian base on September 20th, all eighteen mines were laid in three barrages roughly south of Cape d’Antifer in the last hours of the 23rd. (Judging from a captured log for 1915, it will have taken approximately four minutes for each barrage.) Shifting out into the South West Approaches, about 100 miles northwest of Ushant, a fairly large American barque, Paolina, was stopped by UC65 on the 25th. She was destroyed by charges and gunfire. A very heavily defended pair of large cargo steamers were encountered inbound during the night of the 26th, but no attack could be made. Dived, there was not enough light to use torpedoes and a surface action was ruled out due to the strong escort. Working eastward again, on October 3rd an Italian ‘three-thousand tonner’, Tasmania, was torpedoed without warning off Start Point, Devon. Also, during the first-dog of October 19th, one of the British net-drifters based at Le Havre, Comrades, detonated one of UC65’s mines under her port quarter, while hauling in her nets. Foundering, six of her crew were slightly injured and all were rescued by two other drifters, Girl Rhoda and Speedwell III.

     UC65 next sailed from Zeebrugge on the evening of October 21st, initially to lay mines off Le Havre. This was done overnight on the 23-24th and in order to use her other weapons, travelled to Devon’s waters. There a British defensively-armed collier-transport, North Sea, was torpedoed without warning, not long after noon on November 2nd, 3½ miles south-south-west of Bolt Head. Struck on her port side abreast of her fore mast, she sank in six minutes. One seaman drowned, but he had been ill and seemingly, jumped over the side, rather than abandoning with the rest in the two ship’s boats.  They were picked up by H.M. Armed Minesweeping Trawlers Manx Hero and Vale of Fruin 30 minutes later and were taken into Devonport. 

     Another British defensively-armed transport, Branksome Hall, was attacked that same evening six miles west-by-south of Prawle Point. At around 10 p.m. she was torpedoed aft and on investigation, was taken in tow by H.M. Naval Tug Wapiti  that beached the stricken merchantman on Salcombe Bar almost a day later. H.M. Armed Minesweeping Trawlers Tribune and Zonia were on guard during this operation. Only partly abandoned, twelve were picked up by H.M. Armed Minesweeping Trawler Lois and returned to the Branksome Hall. There were no fatalities and the transport returned to service: only to be sunk in July 1918.

     UB18 must have begun her return to base soon after and made good time. As the afternoon watch ended the next day, November 3rd, she was about 15 miles south of Beachy Head and Kapitänleutnant Lafrenz was on the bridge. As per a report he made later from memory, at 4.15 p.m. he saw a periscope, almost on his starboard beam and took immediate action, ordering her rudder hard-a-port. However, ten or fifteen minutes later, two torpedoes were fired at her from a range of 400 meters. The first grazed her midships, but did not detonate, but the second blew her stern off. Only five of UC65’s company of 29 survived, rescued by H.M. Submarine C15 on surfacing and turned over later to Willonyx off Eastbourne.

     The Royal Navy’s Intelligence Division’s interrogation reports on captured Kaiserliche Marine personnel, along with transcripts of intercepted mail, are fascinating in their detail. Much had been learned since the early sinkings, when the treatment of U-boat crews had created resistance and little information had been gleaned. By late 1917 the process was highly sophisticated and part of the softening up was in transporting the prisoners to Cromwell Gardens, in London’s fashionable West End, so that they could see that the shops were full of goods. Also, personal information, such as officers’ nicknames were sought after, so that the interrogators could drop these into conversations, giving the prisoners a sense that the British knew far more than they really did. Claus Lafrenz’s nickname was Lala.

     Between the interrogating officer’s report and a letter sent to a friend that he had served with on UB18, a fuller description of the last patrol can be gained. Not everything tallies, such as in a torpedo attack off the Lizard. Even so, there are interesting points. Due to heavy weather, she lay on the bottom in the vicinity of Salcombe Bay for three days. Also, her fifth and last torpedo had been expended pointlessly, in that Start Point had been misidentified as a vessel. (Anyone that has sailed in the Firth of Forth and seen May Island looming out of fog should understand this!) And, it was assessed by the interrogating officer that UC65’s loss had been down to over-confidence on the part of Kapitänleutnant Lafrenz, coupled with a keenness to get back to Belgium, for home leave. Also, he was to receive the command of one of the new UB III boats.

     More on Claus Lafrenz’s character came to light in these records. On the later sinking of UB82, Leutnant zur See der Reserve Hermann Freudendahl that had served under Lafrenz on UB18, was pleased to learn that his past commander was alive. Freudendahl stated that in spite of orders from on high, Lafrenz had refused to sink a hospital ship, even although the reservist had tried to persuade him to.

     Apart from this, there was interesting information on the other survivors from UC65. In spite of a desperate shortage of line officers and navigating warrant officers on submarines, resulting in lowering standards and promoting reservists rapidly, Lafrenz wanted rid of Leutnant zur See der Reserve Diedrich Braue. Brutal, Lafrenz had inherited from Viebeg on taking command of UC65. It was, apparently, normal practice for commanders moving on to take their officers and warrant officers with them to their new boats. So, it looks as if he wanted to shed Braue, rather than take him with him to his promised new boat.

     Unlike other commissioned prisoners that British interrogators dealt with, Claus Lafrenz was regarded favourably. It can be seen that unlike others that lied unconvincingly, he provided some useful information, but a fair proportion was inaccurate.

     While it is known that he went to the officers’ Prisoner of War Camp at Skipton, Yorkshire, it has not been determined whether he was also at any of the others. Nevertheless, he kept in touch with friends in Germany by letter and through these, the British N.I.D. received more information: mostly through gossip about friends.

 

    It cannot be determined with any certainty when Claus Lafrenz was released from Skipton, but he remained in naval service. One unconfirmed source has stated that he was in the 3rd Marine Brigade von Löwenfeld from January to August 1920. Considering his outlooks as previously seen, his appearance in this extremely brutal Freikorps unit is curious. Perhaps he was appointed merely as a replacement, or on the other hand, he may then have been as virulently anti-Bolshevik, anti-Democratic and anti-Semitic as others and volunteered.

     Anyway, a series of appointments followed, some shore-bound and others in the torpedo forces still allowed after the Treaty of Versailles. Most interesting was the command of the sail training ship Niobe in 1924. However, he retired as a Korvettenkapitän in April 1925, for reasons unknown. The rest of his life was spent in Fehmarn, devoted, apparently, to agriculture, shipping and fishing. It is known that his father and two of his brothers had been killed during the Great War and it appears that he ran the family estate post-war. He was also the mayor of Fehmarn.

     It is likely that his political beliefs had not been on the political right after all. On the rise to governmental power by the N.S.D.A.P., Claus Lafrenz refused to allow the Nazis’ flags to be flown from the town hall on 31st January 1933. On a date as yet undiscovered, he was, subsequently, dismissed from his mayoral post. Unfortunately, there seems to have been much more pressure, as he committed suicide on 6th April 1937. He was, apparently, mourned widely by local people.

 

 

Return to the top

Return to main page

Return to the Fishermen’s War

 

Oberleutnant zur See Helmut Patzig

Kapitänleutnant Rudolf Schneider

Kapitänleutnant Walther Schwieger

Kapitänleutnant Otto Steinbrinck

Kapitänleutnant Max Valentiner

Kapitänleutnant Wilhelm Werner