HMS Bryher (T350): One of Nearly Two Hundred Trawlers That Swept Britain's Wartime Waters

Part of a Vast Wartime Programme

HMS Bryher took her name, in keeping with the tradition of the class, from one of the Isles of Scilly, and was one of the Isles class of naval trawlers, part of a remarkably large shipbuilding programme that saw 197 closely related vessels built across four classes, Isles, Dance, Shakespearian and Tree, between 1939 and 1945. Bryher herself was ordered on 7 July 1942, laid down that December at Cook, Welton and Gemmell's yard in Beverley, and launched on 8 April 1943, entering service on 24 August that year.

The naming is a small piece of Admiralty tidiness that has left a nice legacy. The Isles class took their names from the smaller islands of the British Isles, which gave the Navy a very large pool of names for a very large class, and it means the Navy List of 1943 reads like a gazetteer of places most people have never visited: Bryher, Gweal, Gulland, Scalpay, Foula, Sanda, Tocsin. Bryher itself is one of the Isles of Scilly, the smallest of the inhabited ones, with a population that has never been much more than eighty people and a west coast that takes the full weight of the Atlantic. It is an entirely appropriate name for a small, tough ship built to work in bad water, and the fact that nobody outside Scilly had heard of it was rather the point: a class of a hundred and ninety-seven ships needs names nobody else is using.

The programme behind her deserves its scale making clear. The Royal Navy took a hundred and thirty-four of these ships, the Royal Canadian Navy seven and the Royal New Zealand Navy four, and they were ordered from the small commercial yards that had spent the previous fifty years building fishing boats. Cook, Welton and Gemmell of Beverley, who built Bryher, turned out seventeen of them on their own. That is the entire logic of the type: the Admiralty could not build fleet minesweepers fast enough, but Britain had a fishing industry with dozens of yards that could build a rugged, seaworthy, slow steel hull in their sleep, and a merchant fleet full of men who had spent their working lives in exactly such hulls in the North Sea in winter. Who those men were, and what the Royal Naval Patrol Service they joined was like, is set out in the articles on HMS Bern (T294) and HMS Duncton (T220).

Larger than the Castle-class trawlers of the First World War that had inspired their design, Isles-class ships typically carried a single 12-pounder gun and three or four 20mm Oerlikon anti-aircraft guns, along with 30 depth charges, a modest but useful armament for vessels built primarily for minesweeping and harbour defence rather than direct combat with enemy warships.

It is worth explaining what a danlayer actually did, because the word has fallen out of use and the job was more dangerous than it sounds. A dan is a buoy: a spar with a weight beneath it and a flag on top, moored to the sea bed to mark a point. Swept water looks exactly like unswept water, so a channel that has been cleared of mines is invisible until somebody marks it, and the danlayer is the ship that follows the sweepers and plants the markers along the edges of what they have cleared. That means stopping, in water somebody else has just declared safe, to lower a mooring over the side, and then doing it again a few hundred yards further on. Everything that came afterwards, every battleship and landing craft that used that channel, was relying on a trawler having got the flags in the right places.

One detail raises Bryher above the general run of her class. She was not a trawler that occasionally laid dans; she was one of a pair specifically converted for the job. The naval draughtsman John Lambert's published plans of the Isles-class danlayer conversion are drawn from Bryher and her sister Farne, dated 1942, which means the Admiralty took two hulls and reworked them for danlaying as a designed conversion rather than an improvisation: the buoys, their moorings and their sinkers had to be stowed where they could be got at quickly, handled over the side by a small crew in a seaway, and laid accurately while the ship was stopped. It is a genuinely specialised piece of seamanship dressed up as a fishing boat, and the fact that somebody sat down and drew it properly tells you the Navy had worked out how much depended on it.

The best way to grasp what danlaying was for is to look at what happened three weeks before Cherbourg. On the evening of 5 June 1944, two hundred and fifty-five minesweepers, the great majority of them British, sailed for the Normandy coast ahead of everything else, and worked through the night to cut ten channels through a barrier of more than six thousand mines: moored contact mines, magnetic mines and pressure weapons, laid to make exactly this operation impossible. The channels they opened were between four hundred and twelve hundred yards wide. Now consider that a swept channel four hundred yards wide, in the dark, in a tideway, is completely invisible, and that behind the sweepers were coming five thousand ships. Every one of those channels had to be marked, on both sides, by somebody stopping in the water and putting a buoy down. That is the job Bryher had been converted to do, and it is why the Navy bothered to design the conversion properly.

The Unglamorous, Essential Work of Sweeping

HMS Bryher's own service record has actually survived rather better than most of her many sisters. She commissioned under Temporary Lieutenant Francis Cecil Corbet Knight, RNVR, who had taken command even before she formally entered service, and remained her captain until the middle of 1945, when Temporary Lieutenant Robert Shaw Fraser, RNVR, took over for the remainder of her wartime career.

Her one clearly documented moment of real drama came on 25 June 1944, when she served as a danlayer, marking safe, mine-cleared channels with buoys, for Task Force 129's bombardment of the German coastal batteries defending Cherbourg. It was serious company to be keeping: the task force, commanded by Rear Admiral Morton Deyo, included the American battleships USS Nevada, Texas and Arkansas, which spent the day trading fire with shore batteries including the formidable Battery Hamburg while supporting the US Army's final push into the city. Bryher's own job, unglamorous but essential, was to make sure the big ships could get close enough to fight in the first place.

The company she was keeping on 25 June 1944 makes the point. Rear Admiral Deyo split Task Force 129 in two: one group with the battleship Nevada, the American cruisers Tuscaloosa and Quincy, the British cruisers Enterprise and Glasgow and six destroyers, and the other with the battleships Texas and Arkansas and five more. Waiting for them was Battery Hamburg, four 11-inch guns behind steel shields in concrete casemates, which held its fire until the bombardment group was comfortably inside its range and then opened up.

The Cherbourg operation is worth finishing, because the bombardment was not the point of it. The Allies had taken the Normandy beaches and could not take the ports, and without a port the whole invasion would run out of supplies before it ran out of ground. Cherbourg was the nearest deep-water harbour and its capture was urgent enough to be worth risking battleships against fixed 11-inch guns in concrete. The bombardment did not silence Battery Hamburg, but it drew the defence seaward while the American infantry came in from behind, and the city fell within the week. The Germans then wrecked the port so comprehensively that it was one of the most thorough demolitions of the war, and it took until well into the autumn to get it working properly. Even then it was worth every shell. The dan buoys Bryher put in the water that day were part of the chain of small tasks that made the argument possible in the first place.

It was not a one-sided afternoon. Hamburg straddled USS Texas with its third salvo, and a shell hit her bridge, killing her helmsman, Christen Christensen, and wounding thirteen more. Texas fired 206 rounds of 14-inch in just under three hours and did not silence the battery; nobody did that day. What the bombardment achieved was distraction, enough of it for the American infantry to get into Cherbourg from the landward side, which was the point of the whole exercise. And underneath all of that, a 545-ton trawler out of Beverley was stopping every few hundred yards to put a flag in the water so that everybody else knew where it was safe to be.

Like most of her class, Bryher's war was otherwise the routine, repetitive business of clearing mines and defending anchorages that rarely made headlines at the time and left correspondingly little trace in the historical record. She was sold out of naval service in 1947, her active career at an end.

Beyond her own service, ships of her type more broadly served the Royal Navy, the Royal Canadian Navy and the Royal New Zealand Navy throughout the war, clearing mines from Britain's coastal waters and defending harbours against submarine and surface attack, precisely the kind of unglamorous, unrelenting work that kept ports open and shipping lanes safe without ever making headlines.

The Isles class paid a real price for that unglamorous service: 23 vessels of the wider programme were lost in combat during the war, a reminder that even the humblest converted fishing boat pressed into naval service faced genuine danger from mines, aircraft and enemy submarines.

Surviving vessels went on to further useful work after 1945, including wreck disposal and danlaying duties, and several were transferred to allied navies including Canada, Norway, Italy, Portugal and West Germany, a testament to just how versatile and durable the basic trawler design proved to be, long after the war that had prompted its construction had ended.

What became of her after 1947 has not survived into the published record, which is itself typical. Most of the Isles class were disarmed and sold as war surplus, and they went in every direction: to allied navies, to commercial fishing fleets, to salvage firms, to owners in Norway, Italy, Portugal, Canada and West Germany. Some were still working in the 1970s. A steel trawler hull built to Admiralty standards is an extremely durable thing and there was a ready market for one in a world short of ships, so the odds are that Bryher went back to doing what her whole design was descended from, and that somebody spent the 1950s hauling fish out of the sea in a ship that had marked the way into Cherbourg. There is no record of it either way, which is a fair epitaph for a class whose entire contribution was to make other ships' work possible.