HMS Venturer (M08): The Fishing Trawler Britain Borrowed for Minesweeping

Built as the Suffolk Harvester

HMS Venturer began life as a commercial fishing trawler, built by Cubow of Woolwich in 1972 for Small and Co. under the name Suffolk Harvester, one of four sister trawlers built to a similar design, with no naval service whatsoever originally intended for her.

The name she was given had a good deal behind it. The most famous HMS Venturer was a submarine, and on 9 February 1945 she did something no submarine had ever done and none has done since: she sank another submarine while both were submerged, working out a firing solution in three dimensions by hand and by ear. Her account is here. Venturer had also been in circulation as one of the Royal Naval Reserve divisional names carried by Ton-class minesweepers, a system explained in HMS Alfriston (M1103). It is now on the bow of the newest frigate in the fleet, the first of the Type 31s.

Chartered for the Severn Division RNR

In 1978, with the Royal Navy looking for cost-effective ways to support its mine countermeasures reserve, Suffolk Harvester was taken up from trade, chartered by the Ministry of Defence from 1 November 1978 and allocated to the Severn Division of the Royal Naval Reserve, commissioning as HMS Venturer with the pennant number M08 in Bristol that December.

There Were Two of Them

She was not a one-off, and the pair are the point. Cubow of Woolwich built two near-identical stern trawlers for Small and Company of Lowestoft: Suffolk Harvester in 1972 and Suffolk Monarch in 1973. In 1978 the Ministry of Defence chartered both. Suffolk Harvester became HMS Venturer for the Severn Division of the Royal Naval Reserve at Bristol; Suffolk Monarch became HMS St David, M07, for the South Wales Division, taking a name that division had already given to a Ton-class minesweeper, HMS St David (M1124). Between them the two trawlers were, briefly, a class of their own.

What they were really for was not saving money, although they did that. It was a proof of concept. The Royal Navy's war plan for mine countermeasures had always assumed that in a general war it would take up several hundred fishing trawlers from trade, put naval crews and sweep gear in them and send them out; the plan had worked twice, in 1914 and 1939, and by the 1970s nobody serving had ever actually done it. Chartering two modern stern trawlers and finding out whether they could tow a sweep, hold station and be maintained by a reserve crew was the cheapest possible way of testing an assumption on which the defence of every British port depended.

The answer turned out to be yes, and it was demonstrated for real rather sooner than anybody expected. In April 1982 the Navy requisitioned five deep-sea trawlers from Hull, put Ton-class crews in them, and sent them to the South Atlantic to clear the minefields off Port Stanley. The account is in HMS Bildeston (M1110). The rehearsal for that had been going on out of Bristol for three and a half years.

Minesweeping With the 10th Squadron

Venturer served with the 10th Mine Countermeasures Squadron out of Bristol until November 1983, conducting team sweeping exercises and helicopter transfer training across the Solent, Bristol Channel and surrounding waters, part of a particularly resourceful wartime-style solution to peacetime budget constraints, crewed by thirty-five reservists aboard an unarmed converted trawler.

What Team Sweeping Actually Is

The phrase in her record is worth unpacking because it describes a genuinely odd piece of seamanship. A single ship towing a sweep can cut the mooring wires of mines laid at a shallow depth. Mines laid deep, in the sort of water a submarine or a large ship needs, are beyond her: the sweep will not stay down and the ship cannot cover enough width.

The answer is the team sweep. Several ships steam in line abreast, a long way apart, with one enormously long armed wire slung between them and held down by depressors, and the whole formation walks up the channel together dragging it. Explosive cutters on the wire sever the mooring cables and the mines float up to be shot. It requires the ships to hold exact station relative to one another for hours at a time, at a speed set by the wire rather than by anything they would choose, and if one of them wanders the sweep either goes slack or parts. It is precisely the kind of thing a trawler is good at, because a trawler spends its working life towing a heavy object in a straight line at a fixed speed and its skipper thinks about nothing else.

Thirty-five reservists, an unarmed hull and a wire is not a glamorous capability. It is, however, the only way of getting a convoy out of the Bristol Channel if somebody has mined it, and that was the entire argument.

Back to Civilian Life

When her naval charter ended in 1983, the ship reverted to her original name and owners, becoming Suffolk Harvester once again, before going through a succession of further identities as Britannia Harvester in 1990, VOS Harvester in 2009 and BPOS Harvester in 2011, working through most of that time as an emergency and rescue response vessel in the North Sea.

Still Working Under a Different Flag

Temporarily laid up at Lowestoft in May 2020 due to the Covid-19 pandemic, the old HMS Venturer was reported as of 2022 to be flying the flag of Djibouti and operating as a standby safety vessel, a properly unusual and well-travelled afterlife for a ship whose brief spell as a Royal Navy minesweeper was really just one chapter in a much longer working life.

The Longest Part of Her Life

Emergency and rescue response vessel is a job title that came out of a disaster. When the Piper Alpha platform burned in the North Sea in July 1988 and a hundred and sixty-seven men died, one of the findings of the inquiry that followed was that the standby vessels attending offshore installations were not adequate to the job. The regulations that came out of it made a properly equipped emergency response and rescue vessel a condition of operating a platform.

An ERRV sits within a few hundred metres of a rig, in the North Sea, for weeks at a time, doing nothing at all, so that if anything happens she is already there. She carries fast rescue craft, a hospital, survivor accommodation and firefighting monitors, and her crew practise recovering people from the water in conditions in which nobody would choose to be in it. A stern trawler makes a good one: seakindly, roomy aft, and built to work in weather.

That is what she did for most of thirty years, under four more names, before ending up laid up at Lowestoft in a pandemic and then flying the flag of Djibouti. A boat built to catch fish off Lowestoft, that swept mines for the Royal Naval Reserve for five years, and has since spent decades waiting beside oil rigs in case somebody falls in, has had a more varied career than most warships.