Warship Wednesday Dec. 4, 2024: Danish E-Boat Days

Here at LSOZI, we take off every Wednesday to look at the old steam/diesel navies of the 1833-1954 period and will profile a different ship each week. These ships have a life, a tale all their own, which sometimes takes them to the strangest places.- Christopher Eger

If you enjoy my always ad-free Warship Wednesday content, you can support it by buying me a cup of joe at https://buymeacoffee.com/lsozi

Warship Wednesday, Dec. 4, 2024: Danish E-Boat Days

Foto: Tøjhusmuseet

Above we see a great Royal Danish Navy recruiting poster from 1951 by Aage Rasmussen. Reading roughly, “A healthy life. A future – become a naval officer,” it shows a well-dressed lieutenant in the Danish RN style uniform, complete with Marineglas 6×30 binos produced by Carl Zeiss.

You may find the planing torpedo boat– the hull number, P558, makes it Musvaagen— in the poster’s foreground familiar. We’ll get into that.

The Danish TB Saga

Denmark loved fast torpedo boats probably longer than any other naval force in history, fielding no less than 108 of them between 1879 and 2000.

Danish torpedoer Hajen, first of her type in service to the King of Denmark

As we have touched on with a past Warship Wednesday (“A Tough Little Wolf”) which focused on the Great War-era Søridderen and Tumleren classes, the country had 17 such TBs on hand going into 1914.

The green-painted Tumleren class torpedo boat Vindhunden aside the anchored panserskibet coastal defense ship Peder Skram at Østre Mole. Commissioned in 1911, Vindhunden and her class would be retired by 1935. (Aarhus Stadsarkiv)

Danish Tumleren class torpedo boat Vindhunden in Aarhus Harbour between 1919 and 1924, note the cutlass worn, likely by the crew’s bosun. There is just so much I love about this image from the dirty whites and flatcaps to the drying kapok life jackets and the grimy snipe catching a smoke. (Aarhus Stadsarkiv)

During WWI, the country managed to construct 10 further vessels of the 126-foot Springeren class, the last two of which were finished in 1919. This allowed the country, interbellum, to retire elderly boats left over from the late 19th Century.

June 1927. Three Great War-era Springeren-class TBs in Aarhus harbor including Søhunden (Nr.7), Narhvalen (Nr.5), and Havhesten (Nr.6), June 1927 at the Østre Mole. At the time, Søhunden was under the command of HKH Kronprins Frederik, the Danish heir. (Photo: Aarhus Stadsarkiv)

By 1929, six big (195-foot) and well-armed Dragen/Glenten-class torpedo boats began entering service, which gave enough breathing room to the Danish admiralty to finally put the last of their pre-1914 TBs (the six members of the Søridderen and Tumleren classes) to pasture, and downgrade the Springeren-class to fast mine warfare vessels (capable of both laying and sweeping).

Danish Torpedobåden Dragen T1 overhead. Capable ships of 335 tons, the Dragen/Glenten-class torpedo boats carried two deck guns, two bow-mounted 17.7-inch tubes, and 4 or 6 further 17.7-inch tubes on turnstiles.

Danish torpedo practice 1939 Torpedobåd affyrer skud i Aarhus Bugten.

Danish Torpedobåden Dragen (T1). THM-12146

Danish Mandskab, Torpedosektionen Dragen class in background 1937-38 THM-6114

Danish Aarhus Harbour, torpedo boats T1 Dragen, T2 Hvalen, and T3 Laxen are located at the Quay 1939, iced in

Danish torpedo boat T3 Laxen in Aarhus Bay in the autumn of 1939

Aarhus, Denmark, Torpedo boats T2 Hvalen, T5 Høgen, and T4 Glenten, 1939. Note the six chemical smoke cylinders on the stern and twin 75-foot mine rails on each boat.

Then came WWII.

Denmark entered the conflict in 1939 the same way it had in the First World War, as a neutral. To enforce this neutrality on the sea, she had the aforementioned Dragen/Glenten TBs in her fleet– balancing several small gunboats, 10 fast minesweepers (the old Springeren-class TBs, sans torpedoes), four submarines, the training cruiser (artilleriskib) Niels Juel, and the old bathtub battleship (kystforsvarsskib) Peder Skram.

Ordered not to resist when the Germans blitzkrieged through the country in April 1940, and then largely disarmed, the Danish Navy was further humiliated by its government and ordered to “lease” their beautiful Dragen/Glentens to the occupier in February 1941. The Kriegsmarine used them as U-boat support ships and torpedo retrievers, numbered TFA1 through TFA6.

One, TFA3 (ex-Dragen) was lost to a mine, while the other five were in condemned condition by the end of the war.

Wrecked former Danish torpedo boats, the Dragon class, photographed in Flensburg harbor after Donau’s explosion, 14 June 1945. A4= “ex-Glenten”, 5= “ex-Hvalen, 6= “ex-Laxen” THM-6979

Post-war, the Danish Navy, which had committed ritual scuttling in 1943 to escape German capture, only had a single torpedo boat left, Havkatten, a circa 1920 member of the Springeren class had been able to escape to Sweden and returned home in 1945 as the flagship of the Free Danish Brigade’s 133-member flotilla (Den Danske Flotille).

Officially rerated in the 1930s as a minesweeper, Havkatten only had a single 17.7-inch torpedo tube still mounted in her bow– but no torpedoes!

The torpedo boat Havkatten, which escaped to Sweden on 29 August 1943, returns to Copenhagen on 11 May 1945. Her 27-member crew at this point manned two 57mm AAA guns and a 40mm Bofors. FHM22287

Besides Havkatten, the Danish flotilla at VE Day only contained three small 80-foot coastal mine boats (MS 1, MS 7, and MS29), each with a 12-man crew and armed with a 20mm cannon, nine even smaller coast guard launches with 5-man crews, and the 41-foot motor launch Fandango, with the latter types only armed with small caliber machine guns.

Schnellboote Solution!

Looking to get back into the TB business after WWII, the easiest way to pull this off was for the Danes to get reparations in the form of former Kriegsmarine Schnellboote, or E and S-boats in Allied parlance.

The Danes had the hulk of one, S116, on hand already in 1945.

As chronicled by Die Schnellboote Seite, beginning in early 1947, OMGUS, the U.S. occupation government in Germany, authorized the sale of 10 scratch-and-dent German E-boats collected at Bremerhaven for $80,000. With that also came whatever 21-inch torpedoes and parts could be scrounged.

S64 in Kriegsmarine service with the panther emblem of 4. Schnellbootflottille. Post-war, she was the Norwegian Lyn and then the Danish Stormfuglen

Hejren (P566) ex-S117, in Danish green livery.

Copenhagen kept reaching out concerning similar boats and obtained four more from U.S. stores in 1948, and another four from the British.

In 1951, the Danes picked up six E-boats from Norway, where they had been in coastal service.

Ultimately, the Danes would own no less than 22 former German E-boats and eventually get 18 of them working.

The first operational, appropriately dubbed Glenten (T51), formerly the Kriegsmarine’s S306, entered service in July 1947, and those that followed are typically known as the Glenten class in Denmark even though the boats came from several slightly different German classes. Meanwhile, in English-speaking sources, these are often broken down by former German sub-classes: Glenten/T51/S170, Gribben/T52/S38, and Havørnen/T53/S139.

See table:

By late 1954, the fleet reached its zenith, with 15 former German E-boats in active service, a full decade after WWII ended.

Danish Glenten class Schnellbooten. Note the boat to the right has been retrofitted with a U.S. 40mm L60. THM-24118

Havørnen (P-553, ex-S216), Danish Glentenklassen Schnellboote. THM-24131

Jagtfalken (P-557, ex-S79) Danish Glentenklassen Schnellboote. THM-24132

Musvaagen (P-558, ex-S79) first in a nest of Danish Glentenklassen E-boats.THM-24137

Same as above, with Musvaagen’s name plainly visible on the deck house. Note the forward 20mm cannon mounts and starboard torpedo tube hatch.THM-24145

Isfuglen (P-556) outboard of a group of Danish Glentenklassen S-boats. THM-24129

As acquired by the Danes, most of these boats had two 21-inch forward torpedo tubes- the first time the Danish Navy went with such large fish– with two torps loaded and room for a reload, giving them the capability to carry four torps. War-surplus German G7 straight runners were used.

Torpedo fired by Danish Glentenklassen Schnellboote. THM-24148

Deck-mounted armament at first typically consisted of anywhere from two to five 20mm/65 Flak C30/C38s. The guns were classified as the Mk M/39 LvSa in Danish service. The boats also had some capability to run a few mines and/or depth charges on stern racks.

2 cm Flugabwehrkanone 38 Danish Glentenklassen Schnellboote. Note the American M1 helmets. THM-24157

2 cm Flugabwehrkanone 38 Danish Glentenklassen Schnellboote E-boat S-boat THM-24156

2 cm Flugabwehrkanone 38 Danish Glentenklassen Schnellboote. THM-24150

With all the E-boats running 114 feet in length on similar hulls, the force was all powered by a trio of Daimler-Benz diesels, albeit in three different variants across the classes. Even the slower models could still touch 38 knots at a full clip, at least for the length of a couple of attack runs, while the zestier of the herd could log 45. Their range was typically 700 miles, more than enough to cover the narrow Kattegat and Skagerrak straits. 

One of three 3,000 hp Daimler-Benz MB518 diesels on a Danish Glentenklassen Schnellboote. Other models included 2,500 hp MB511s or 2,000 hp MB501s. THM-24154

By 1951, with NATO standardization, the Danish E-boats started landing their German-made flak guns in favor of, first, a single 40mm/60 Mk M/36 Bofors aft, and then by late 1955 an improved new Swedish-made 40mm/70 Bofors SAK 315 single (M/48 LvSa in Danish service) as well a U.S. supplied 20 mm/70 Mark 7 Oerlikon (Mk M/42 LvSa) forward.

40mm Bofors L60 on Danish Glenten class Schnellboote. THM-24121

March 1957. 40mm Bofors L70. Danish boats mounted these on the stern and had a 20mm single forward in the “zero gravity” area near the bow. Note the U.S. M1 helmets. Aarhus Archive. 

Likewise, they received a small surface search radar and NATO pennant numbers, transitioning from the Danish T series (e.g. T54) to the NATO P series (e.g. P554).

In Danish service, these craft typically had 22 member crews including two officers, two petty officers, and 18 ratings.

Gangway guard for a Danish Glentenklassen Schnellboote. Note the M1 Garand rifle (adopted as the M/50 GarandGevær). THM-24141

In Danish service, boats were originally in a grey/green livery but the country did experiment with a flash white scheme as well.

4 September 1953. The MTB tender HMDS Hjælperen (A563) in Aarhus Harbor together with six motor torpedo boats, all former S-boats. Note that four are painted flash white and two are grey/green. Note the forward mounts have been landed (Photo: Aarhus Stadsarkiv)

Glenten (P551, ex S306) with the experimental flash white scheme

Our subjects were augmented in service by 10 brand-new Danish-built Flyvefisken and Falken-class vessels, which were constructed at Copenhagen based on a scaled-up 118-foot version of the German design they had been working with since 1945.

12 August 1959, Danish torpedo boats motortorpedobåde in the harbor off Vejerboden. Five Danish motor torpedo boats: Sværdfisken (P505), Flyvefisken (P500), Glenten (P551), and Falken (P565). The boats are part of a large NATO squadron of 69 ships that docked in Aarhus Harbour. Of note, Sværdfisken and Flyvefisken, despite their lower pennant numbers and appearance, are actually brand-new TBs commissioned in 1955, built at Orlogsværftets, København as an ode to the German E-boats. Note their stern 40mm L70s and surface search radar fits. (Photo: Aarhus Stadsarkiv)

The first to be decommissioned by the Danes, Hærfuglen (ex-S133), Isfuglen (ex-S127), and Musvaagen (ex-S79) were all early boats with smaller diesels and were pulled from service in November 1954. Speed was everything with these boats, after all.

By 1960, the Danes still had 10 left in service. However, all things fast eventually run out of time, and by September 1965, the last, Viben (ex-S68), was withdrawn, capping some 20 years of E-boat fun under the Dannebrog.

November 1957 Motortorpedobåde entering Aarhus (Base). (Photo: Aarhus Stadsarkiv)

Epilogue

None of the Danish-operated E-boats survive. 

Supplemented by the newer Flyvefisken and Falken-class near-sisters, they were replaced by a half-dozen of the Soloven (British Vosper Brave-Ferocity type). Short boats at just 98 feet, they carried four torpedo tubes and could reach a paint-peeling 50 knots.

Danish Soloven (Sea Lion) Class Vosper Brave SØHUNDEN (P514).

Finally, in 1974 the Danish Navy introduced their penultimate torpedo boat, the 10 ships of the Willemoes class. Sleek 139-footers running on Rolls-Royce Proteus gas turbines, they could make 40 knots and carry a combination of Harpoon AShW missiles, up to six torpedo tubes for modern wire-guided torpedoes, and a 76mm OTO Melera.

Danish Willemoes klassen torpedo missile boats

The Willemoes would remain in service until 2000.

The end of an era.

Ships are more than steel
and wood
And heart of burning coal,
For those who sail upon
them know
That some ships have a
soul.

If you liked this column, please consider joining the International Naval Research Organization (INRO), Publishers of Warship International

They are possibly one of the best sources of naval study, images, and fellowship you can find. http://www.warship.org/membership.htm

The International Naval Research Organization is a non-profit corporation dedicated to the encouragement of the study of naval vessels and their histories, principally in the era of iron and steel warships (about 1860 to date). Its purpose is to provide information and a means of contact for those interested in warships.

With more than 50 years of scholarship, Warship International, the written tome of the INRO has published hundreds of articles, most of which are unique in their sweep and subject.

PRINT still has its place. If you LOVE warships you should belong.

I’m a member, so should you be!