Ireland’s small naval fleet and shortages of specialist helicopters have created a persistent maritime vulnerability that traffickers are exploiting to send cocaine from South America toward the United Kingdom, law enforcement and defence sources say.
The interception of the container ship MV Matthew in 2023 — which yielded an estimated £132 million of cocaine after an operation involving the Irish Army Ranger Wing and assistance from the U.S. Drug Enforcement Administration — remains an exception rather than the norm. Irish authorities and analysts say most interdictions at sea require military resources that are in short supply, allowing organised crime groups to use Irish waters as a staging ground for shipments bound for Britain.
The Irish Naval Service comprises eight ships, officials acknowledge, and analysts say staffing shortfalls mean only about two vessels can be routinely deployed at a time. Helicopters from the Defence Forces are intended to support maritime security, but personnel constraints have left air assets unavailable at times for counter-narcotics missions. Irish government statements say the Defence Forces maintain a continuous presence in territorial waters and that manpower issues are being addressed.
The MV Matthew operation was carried out after a U.S. intelligence and investigation effort penetrated a trafficking network linked to the Kinahan cartel, according to court records unsealed in U.S. federal courts. Prosecutors say the cartel and associated groups bought the MV Matthew in August 2023 and sought to use it to move cocaine by sea. Members of the Irish Army Ranger Wing boarded the vessel after the naval ship LE William Butler Yeats fired warning shots — the navy’s first warning shots since the 1980s — and a planned helicopter insertion required refitting an air ambulance because no specialist helicopters were available for the mission.
Court filings and reporting describe a multi-day operation in which Irish security forces tracked a smaller trawler, the Castlemore, which had been fitted with a tracker by authorities. Intercepted messages showed coordinators in Dubai using the name “Captain Noah” to direct crews. Traffickers aboard the Castlemore ran aground during a storm and had to be rescued by the coastguard; other crew members on the MV Matthew feigned medical problems to enable temporary removal by coastguard helicopters. Eight men were later convicted in relation to the MV Matthew seizure and sentenced to a combined 129 years in prison.
Authorities and analysts describe a shift in trafficking methods. Containerised smuggling into major northern European ports such as Rotterdam and Antwerp has long been a route for cocaine, but tighter port security and monitoring by the EU and the U.K.-based Maritime Analysis and Operations Centre (MAOC) — which monitors hundreds of suspect vessels daily — have pushed traffickers toward offshore tactics. At-sea drop-offs, in which waterproof parcels are jettisoned from large ships and recovered by smaller boats, have become more common.
Ireland’s geographic position makes it a target. Atlantic container traffic typically passes Ireland’s waters before reaching northern Europe, and the state’s territorial sea covers about 132,000 square miles. Traffickers can move product into the Republic and then across the land border into Northern Ireland before using ferry routes to Scotland and England, a process officials say can be facilitated by limited checks on some cross-border traffic.
Demand in Britain remains high. Estimates cited by law enforcement place annual U.K. cocaine consumption at roughly 117 tonnes, creating a lucrative market for organised crime groups. The National Crime Agency and other agencies report rising seizures in Northern Ireland and the Republic: Irish authorities say more than £13 million of cocaine was seized so far in the year of reporting, and the total value of seizures in some areas has risen sharply since 2022.
In May, 185 kilograms of cocaine were discovered hidden inside a trailer at Belfast Port that was due to board a ferry to Cairnryan, Scotland. Authorities described the seizure, with an estimated street value of £18.5 million, as among the largest in Northern Ireland’s history; a driver has been charged in connection with that load.
Defence spending is a point of political and operational focus. Ireland’s defence budget has been among the lowest in the European Union relative to GDP — approximately 0.2 percent — though the government has announced a planned increase in defence funding of roughly €600 million over the subsequent four years. Irish officials say the added resources will strengthen maritime patrols and address manpower shortfalls.
Former Irish Army commandant Cathal Berry described the situation in a recent documentary as resembling a ‘‘Wild West’’ in parts of Ireland’s territorial waters, comments that reflect concern among some former military officers and law enforcement officials about the scale and sophistication of maritime trafficking. Authorities say co-ordination with international partners, intelligence-led policing and occasional high-profile interdictions have disrupted networks, but they also acknowledge the logistical challenges of routinely policing a large maritime area with limited ships and air support.
Officials in Dublin and London continue to emphasise cross-border and international cooperation to target organised crime networks and adapt to changes in trafficking methods, while court proceedings and asset seizures related to recent cases remain active. Law enforcement agencies say they will continue to use both national and international resources to identify and interdict shipments at sea and on land.