Greek freighter, SS Mount Othrys, in collision on the Thames (1945)

Historical photograph of the SS Mount Othrys, a damaged cargo vessel, highlighting its collapsed structure due to the aftermath of a collision.
Undated photograph of what may possibly be the damaged front section of Mount Othrys at the time of the accident. Unknown photographer. Copyright: © Historisches Marinearchiv, HMA (by kind permission, 17/01/2025)

Written by Tanja Watson, Maritime Research Specialist, Historic England

This week’s blog looks at the loss event of the SS Mount Othrys (όρος Όθρυς) – a Greek cargo vessel which collided with MV Erinna, a Dutch oil tanker, on the narrower part of the river Thames, near Canvey Island, on Sunday 7 January 1945. While not a war loss, the Greek-owned Panamanian-flagged freighter demonstrates an accident that can easily happen in a busy thoroughfare. Both vessels caught fire in the collision but thanks to the quick response of a nearby fireboat stationed at Holehaven, the oil tanker and most of its cargo could be rescued. The steamer, however, became a total wreck and its remains were later scrapped.

Greek support

Just over 100 losses of Greek-owned vessels have been recorded within the 12 nautical mile limit of England’s coastline; circa twenty of these date from the Second World War.[1] The Mount Othrys offers the opportunity to highlight the important role Greek shipowners played under German occupation during the Second World War. Long-standing connections with the British shipping industry before the War made them an obvious ally, and their continued support of Britain throughout the War – allowing almost the entire Hellenic merchant fleet to be used for transporting goods (40 million tons of supplies) and troops alongside the Allied Forces, at great cost to the shipowners themselves – were invaluable in the fight against the Axis alliance of Germany, Italy and Japan.[2] By the end of the War, the Greek merchant fleet had lost almost 80% of their ocean-going freighters, every passenger vessel, and more than 2,000 seamen.[3]

Mount Othrys

At the outbreak of the War, Greece had the ninth largest merchant marine in the world, consisting of around 500 vessels, with an additional 100 Greek-owned steamships sailing under British and Panamanian flags. The British government chartered a number of these, Mount Othrys being one of them. A regular on the large Allied slow convoys; sailing the Sierra Leone (Freetown)/ Halifax (later New York)/ Sydney (Cape Breton) or Halifax or New York and the UK routes, it participated in 14 convoys between 1940-44, transporting supplies such as coal, pitch, and potatoes.[4]

Black and white photograph of the SS Mount Othrys, a Greek cargo vessel, in the water. The ship is shown with masts and cargo equipment visible, taken from the side with some coastline in the background.
Photograph of the SS Mount Othrys at sea, taken in September 1943 by the U.S. Coast Guard. Copyright: Historisches Marinearchiv (HMA), Raul Maya collection, HMA (by kind permission ).

The steel-hulled freighter was originally built by Harland and Wolff of Belfast in 1919 as SS Newton and under ownership of Lamport & G. Holt, for the Brazil & River Plate Steam Navigation Co. Ltd. in Liverpool.[5] In 1933, Newton was changed to Mount Othrys on transfer to Greek ownership (first Theseus Shipping Co. Ltd, Athens; then Rethymnis & Kulukundis, Panama; and in 1936, Kulukundis Shipping Company). Her final owner, Emmanuel Markou, purchased her in 1938, continuing her registration under Panamanian flag. Markou was related to the family of Manuel Kulukundis – a British-Greek banker, shipowner, and chief negotiator with the British government in the discussions around chartering the Greek merchant fleet around that time. Kulukundis and his cousin had founded the famous Rethymnis & Kulukundis (R&K) in 1921, which eventually became the largest Greek shipping office in London.[6]

The collision

On the morning of the collision, at around 10.30am, the MV Erinna, a 9,100-ton Shell tanker built in 1936, laden with 8,000 tons of motor spirit (80% octane), was pulling out into the fairway from Coryton Wharf, assisted by two tugs and heading down river, outward bound. Meanwhile, the SS Mount Othrys, a 6,500-ton vessel, was about to arrive to its destination, London, having picked up its cargo from the Canadian Port of Saint John on Newfoundland.[7] It was transporting Quaker Oats in cardboard boxes and bulk grain, and was making upriver, passing Holehaven, the creek to the west side of Canvey Island on the lower Thames.

Black and white photograph of the Greek cargo vessel SS Mount Othrys at sea, showing its steel hull and smokestack.
Photograph of the Dutch oil tanker MV Erinna, date and photographer unknown. Copyright: Stichting: Maritiem-Historische Databank, (Permission granted)

For whatever reason, as the Erinna moved out into the fairway, the Mount Othrys collided with her – striking the Erinna on the port side and bursting No7 port tank. Some 350 tons of petrol gushed out and showered the two ships and surrounding water. A spark must have ignited and both vessels were suddenly engulfed in flames. The crews on both vessels started abandoning ship, some even diving into the flaming water.[7]

The National Fire Service

Fortunately, the collision was heard by the crew of the National Fire Service (NFS) fireboat, the F.B.282 Laureate, normally stationed at nearby Holehaven, and upon seeing the flames the crew immediately scrambled to assist, laying out hose and foam branches on the deck of the fireboat. During World War II, the London Fire Brigade’s Thames River Formation used fireboats to fight fires along the banks of the Thames and protect ships in the river. It had about 70 craft, including fireboats, fire floats, and other tenders, and was ‘the first to be equipped with radio communications’.[8]

A black and white image showing a group of crew members on a small boat in the river Thames, with some members waving flags. The Tower of London is visible in the background.
With the Tower of London in the background, NFS firemen of the River Thames Formation travel down the river on their way to an incident in 1943. (D 17215) Copyright: © IWM https://www.iwm.org.uk/collections/item/object/205200557

As the first arrival to the scene, an immediate decision had to be made as the two burning vessels were starting to drift apart. The section leaders on board the Laureate judged the tanker as in the greatest danger as well as the greatest threat to any nearby shipping, jetties and wharves. Approaching the tanker’s starboard side, the firefighters clambered on board with their hoses which soon changed spraying water to foam. Altogether, the NFS men were reported to have worked for 21 hours, with some injured and taken to hospital.[9]

“The speed and effectiveness with which this was done was due not only to the resolution of the branch operators, but also to the unflagging energy of the pump operators, who, in using nearly 600 gallons of foam solution, had rapidly to unseal and empty more than 100 5-gallon tins into the multiple jet inductor.” [10]

Several members of the crews of the two ships were reported missing, believed drowned. Eventually the flames were put out and the tanker was saved with very little loss to the cargo. Other vessels continued to try and save the Mount Othrys, the Thames tug Sun VIII being one of them [11], but eventually the freighter had to be beached at Scar’s Elbow on Canvey Island.[12]

On January 8th, the day after the collision, the cargo vessel was re-floated and four tugs attempted to tow it to nearby Tilbury. This failed and the vessel was re-beached at Mucking. The superstructure and majority of the accommodation amidships had completely burnt out. The engine and boiler rooms were flooded, and the vessel hogged and was badly cracked. On the 20th January, at 02:30, the ship broke into two parts and was declared a total loss.[13]

Commendations were awarded to some of the Thames firefighters involved in putting out the fires, among the last to be given national gallantry awards: one British Empire Medal and nine King’s Commendations for Brave Conduct.[14] Three of Mount Othrys‘ crew were killed in the accident – two Greeks (both stokers) and a Brit.[15]

Footnotes

[1] National Marine Heritage Record (NMHR), Historic England. Marine records are currently searched via the Heritage Gateway (Mount Othrys, record id 1260991)
[2] Greek Shipping Miracle: Decimation of the fleet 1940-1945
[3] Voudouris, Dr. Ioannis, The Contribution of the Hellenic Merchant Fleet during the WWII (April 30, 2017)
[4] Arnold Hague Convoy Database, OS/KMS Convoy Series
[5] WWI Standard Ships, War Justice (the name given to Mount Othrys in initial construction phase)
[6] Greek Shipping Hall of Fame, Manuel E. Kulukundis (1898-1988)
[7] Historisches Marinearchiv (HMA), Mount Othrys
[8] Pike, David C, A retired London Fireman: A short history of London’s fireboats (April 18, 2021)
[9] The Crawley & District Observer, 22 September 1945, page 2
[10] Canvey Island: History & memories of a unique island community, Thomas Henry Setchell BEM
[11] Thames Tugs: London Tugs Limited, Sun VIII
[12] Historisches Marinearchiv (HMA), Mount Othrys
[13] Pike, David C, A retired London Fireman: A short history of London’s fireboats (April 18, 2021)
[14] Historisches Marinearchiv (HMA), Mount Othrys

HMTS Monarch III (1916-1945)

Photograph of the third HMTS Monarch, taken in 1916 by an unknown photographer. Credited to Swan, Hunter & Wigham Richardson and sourced by K. R. Haigh, Cableships and Submarine Cables, Adlard Coles Ltd., 1968. Public Domain image. Source: https://en.wikipedia.org/wiki/CS_Alert_(1890)#/media/File:CS_Monarch_(3).png

With accusations of sabotage of pipelines and cables in the news here is a topical wreck of the week. Written by Tanja Watson, Marine Research Specialist at Historic England.

Today marks the 80-year anniversary of the loss of HMTS Monarch (III), a cable repair ship built in 1916 for the General Post Office (GPO) – the institution in charge of the state postal and telecommunications systems between 1870-1969. [1] There are two main types of cable ships: cable repair ships, also known as cable cutters – which tend to be smaller and more manoeuvrable, still capable of laying cable but the primary job is fixing or repairing broken sections of cable; and cable-laying ships – which are wider and designed to lay new cables.

An elegant steamer of single deck construction in steel with two screw-driven, steam turbine 6-cylinder engines, the HMTS Monarch (III) was one of several cable ships built by Swan, Hunter & Wigham Richardson Ltd at their shipyard in Wallsend, Tyne and Wear. [2] With a crew of 65 – measuring almost 68 metres in length, 10 m in breadth, and 1,150 gross register tons – it was equipped with three cable tanks and various specialist tools and features designed to sever and repair submarine telegraph cables in British waters for the next thirty years. [3]

Several of the early cable repair vessels were called HMTS Alert (I & II) and HMTS Monarch (I – V). This is about the third cable ship to be called the Monarch. The first one, built in 1830 as a passenger and cargo paddle steamer by Pearsons of Thorne for the Hull Steam Packet Company, was converted to a cable ship in 1853 for the Electric Telegraph Company, finishing as coal hulk and later broken up post 1874. The second was built in 1883 by Dunlop & Co, Port Glasgow, for GPO. It was sunk by a mine or torpedo off Folkstone in September 1915. Due to this event, the new vessel was named the Monarch (III). GPO had originally intended to replace the aging HMTS Alert (I), built in 1871 as The Lady Carmichael by A. McMillan & Son of Dumbarton, Scotland, and converted and used as a cable ship between 1890-1915, but the loss of Monarch (II) changed plans. The vessel was wrecked at Redcar (North Yorkshire), refloated and scrapped in 1932. [4]

Cable laying in the 1850s

The first telegraph cable across the English Channel was laid in 1850 by the English Channel Submarine Telegraph Company of Jacob and John Watkins Brett. [5] The following year, the British connected England, Holland, Germany, Denmark and Sweden. Another cable connected Italy with Corsica and Sardinia. By the mid-1850s, a 300-mile cable was laid across the Black Sea, allowing England and France to connect with their armies instantly (the Crimean war). In 1858, after numerous attempts, a telegraph cable was finally laid between Great Britain and North America. [6]

First World War

On 4th August 1914, within an hour of Britain declaring war on Germany, the HMTS Alert (I) was dispatched to cut the German communication cables in the Atlantic Ocean. Other ships would eventually eliminate the remainder of Germany’s cable network, but Germany was now forced to communicate by wireless transmission, which the British could intercept and decrypt. As the BBC describes it, the Alert undertook “one of the first strategic acts of information warfare in the modern world. A few hours later, the Alert had cut off almost all of Germany’s communications with the outside world. It had hit the kill switch.” [7]

Meanwhile, the Monarch (III) carried on with cable repair work around the British Isles throughout the First World War and in between the wars until she was requisitioned (or possibly charted) by the Admiralty in 1939. [8]

Photograph of HMTS Alert, by unknown photographer. Credited to Postmaster General of the United Kingdom and sourced by K. R. Haigh, Cableships and Submarine Cables, Adlard Coles Ltd., 1968. Public Domain image. Source: https://en.wikipedia.org/wiki/CS_Alert_(1890)#/media/File:CS_Alert_(1).png

Second World War

The British Admiralty requisitioned and equipped at least seventeen cable ships for cable service during the war. [9] HMTS Monarch (III) being one of them, was tasked with providing a telephone connection to France during preparations for Operation Neptune, the naval component of Operation Overlord. [10] In the days and nights following D-Day, the cable ships Monarch (III), under Captain Arthur Troops, and St Margaret’s were used, together with a smaller cable barge, to lay a 160-mile-long telephone cable. [11]

Landing ships with barrage ballons putting cargo ashore on one of the invasion beaches during the Battle of Normandy. Likely similar to the barrage ballons used by the British cable ships, e.g. HMTS Monarch (III). Public Domain image Source: https://en.wikipedia.org/wiki/Barrage_balloon#/media/File:NormandySupply_edit.jpg

On Tuesday 13th June 1944, at around 1300 hrs, while the Monarch, equipped with a barrage ballon overhead to discourage air-attack, was being guarded by Trentonian (K368), a Royal Canadian Navy warship, the 1,000-ton Flower-class corvette – a squadron of US warships appeared in the vicinity. On approaching them, one of the American destroyers, USS Plunkett (DD-431), a 1,630-ton Gleaves-class destroyer, tried to contact them, first firing star shells to illuminate the area in the night, but no response was given by the Trentonian, who spotted that they were an ally and believed the signals were coming from German positions on the coast. The Canadians repeatedly flashed their recognition lights. However, these signals were missed by the USS Plunkett who opened fire on the Monarch, hitting the barrage ballon overhead. The Trentonian manoeuvred to make its identification as an Allied warship more visible, but the Americans continued to fire. About a kilometre away, while still desperately sending out messages by radio and signal lamp, the Trentonian finally moved between the Monarch and one of the US destroyers and only then did the firing stop.

The attack lasted about 10 minutes. The Monarch had been hit – the bridge was destroyed, its superstructure and steering damaged. Two of the crew were killed and 30 injured, including Captain Troops who later died from his wounds. The telephone cable the Monarch had been laying was lost over the side, and the Canadians were told not to share the incident with anyone. [12]

Four crew members standing on the deck of the HMTS Monarch (III) post the attack, surrounded by damaged cable-winding equipment and machinery.
The damage to Monarch was extensive; the broken structure to the right of the photo is Monarch’s bridge.  The communications cable she was laying was cut and lost into the channel. Source: “The Roger Litwiller Collection, courtesy Bruce Keir, RCNVR, HMCS TRENTONIAN.” (Warm thanks to Roger Litwiller for providing the image).

The following year both vessels went down by enemy action. The Trentonian was sunk by the U-1004 near Falmouth, Cornwall, in February; and the Monarch was sunk off Orford Ness, a foreland spit on the Suffolk coast, on 16th April 1945. Two crew members of the cable layer were lost. One of the survivors, Denis Simmons, stated in 2005 that they had been torpedoed on the starboard side by U-2324 (Kapitänleutnant Konstantin von Rapprad) while returning to Felixstowe, having repaired the Suffolk-Netherlands cable. [13] However, according to German sources, the U-2324 did not sink or damage any ships during its 37 day patrol between March and 9 May 1945. [14] Another crewman, Ernest Hunt, Seaman Cable Hand, who served on the Monarch ‘just prior to its sinking’, claims they “were sunk by an acoustic mine off the East Coast whilst returning to Harwich, April 1945”. [15] (A type of naval mine which monitors audio activity in its vicinity).

The wreck lies some 10 miles SE of Orford Ness, on a bed of sand, at a general depth of 30 metres. [16] It sits upright but it is very broken and is draped in marine cable. Giant cable-laying rollers lie at the bows. [17]

The Monarch almost survived the war. On the day it sank, the Allies announced that future operations over Germany would focus on cleanup rather than strategic targets, effectively ending the air war, and that Berlin was now surrounded by the Red Army. [18]

A rare type of vessel

Cable ships have always been a rare sight. In 1892, two-thirds of the world’s submarine cables were owned by Great Britain, yet in 1896, there were only 30 cable ships in the entire world, of which 24 were owned by British companies. The global telegraphic cable network was established around 1900. [19] Today there are roughly 60 cable-laying ships in the world, according to the International Cable Protection Committee (ICPC). [20] 99% of the world’s digital communications rely on subsea cables, with a global network of 1.4 million km (870,000 miles) of telecommunication cables on the seafloor. [21] The UK currently has over 70 active telecommunication cable systems, consisting of several hundreds of individual cables, managed by The Crown Estate. [22] All these, and the power cables needed to carry the electricity derived from wind, wave and tidal installations, the renewable energy, ashore – require these specialized types of vessels and remotely operated underwater vehicles (ROVs) to repair and lay new ones.

Footnotes

[1] HMTS (His Majesty’s Telegraph Ship) was a prefix used for cable ships owned by the British General Post Office (GPO) before they became a public corporation, changing to CS (Cable Ship). 

[2] History of the Atlantic Cable & Undersea Communications, Swan, Hunter & Wigham Richardson, Ltd.

[3] Wrecksite, SS Monarch (III), [subscription required]

[4] History of the Atlantic Cable & Undersea Communications, Glover, Bill, CS Lady Carmichael/ HMTS Alert (1)

[5] History of the Atlantic Cable & Undersea Communications, 1850 Dover-Calais Cable

[6] Onfray, Robert, The Cable Cutters, 11 August 2023

[7] See note [5]

[8] History of the Atlantic Cable & Undersea Communications, Monarch (3)

[9] History of the Atlantic Cable & Undersea Communications, Eric Tate and the Admiralty Cable Ships 1944-1947

[10] Kemp, Paul, Friend or Foe: Friendly Fire at Sea 1939-1945, pp. 37–38, Pen and Sword, 1993, ISBN 0850523850.

[11] Mackenzie, Duncan S., PK Porthcurno, Monarch Under Fire

[12] Litwiller, Roger, White Ensign Flying: Corvette HMCS Trentonian, 2014

[13] See note [3]

[14] uboat.net, Kapitänleutnant Konstantin von Rappard

[15] History of the Atlantic Cable & Undersea Communications, Glover, Bill, HMTS Monarch (3)

[16] UKHO Wreck Report No. 10253 [subscription required]

[17] See note [3]

[18] History – How Stuff works, World War II Timeline: April 16, 1945-April 26, 1945

[19] Naval Historical Society of Australia, Clifton, Fairlie, Occasional Paper 95: Grandfather was a cableman (18 Nov 2020)

[20] DCD, Swinhoe, Dan, The cable ship capacity crunch (6 Dec 2022)

[21] Minds and Machines, volume 34, issue 3, 2024, Submarine Cables and the Risks to Digital Sovereignty, Volume 34, article number 31

[22] The Crown Estate, Marine: Cables and pipelines