HMS Protector, UK's Only Icebreaker, Towed After Engine Failure

HMS Protector, the Royal Navy's only ice patrol vessel, was towed back to her home port of Devonport on October 13 after suffering what British media described as a double engine defect while under way. The incident raises uncertainty over Britain's ability to sustain its maritime presence in the polar regions just as the government weighs a replacement for the vessel.

According to industry sources cited by gCaptain, the ship was towed from Teesside by commercial tugs, with Serco Marine Services craft taking over near port. A Royal Navy spokesperson confirmed that the vessel returned to port to allow investigations into the defect, but offered no details on its scope or on prospects for repair. Former Royal Navy officers voiced concern about the condition of the main engines, and speculation arose over a possible link to recent maintenance work, though none of this was officially confirmed.

Protector was built in Norway in 2001 as the commercial vessel Polarbjørn, used for research and subsea support. The Royal Navy chartered her in 2011 as a stopgap solution following the operational loss of HMS Endurance, and Britain went on to purchase her outright in 2013, for £51 million ($68 million), according to gCaptain. The 5,000-tonne, 89-metre vessel, which holds a DNV Ice Class 05 rating allowing her to operate in first-year ice up to 0.5 metres thick, had previously suffered a propulsion defect in the Caribbean that led to a ten-month refit between 2019 and 2020, and in 2025 completed a major overhaul followed by additional work at a Teesside shipyard.

Protector carries out hydrographic survey work, fisheries inspections and duties under the Antarctic Treaty, in addition to supporting the British Antarctic Survey and showing the British flag by alternating deployments between the Arctic and Antarctica. The RRS Sir David Attenborough, operated by the British Antarctic Survey, can continue scientific resupply work, but all three sources agree that it does not replace the naval, government inspection and sovereignty functions that Protector performs.

The Ministry of Defence is working on a more modern replacement capable of operating in both the Arctic and the British Antarctic Territory, but Defence Procurement Minister Luke Pollard said in a parliamentary response on September 15 that decisions on the procurement method and timeline would be taken in due course. Maritime Executive and Financial Ports note that the situation could repeat the scenario of 2008, when the loss of service of HMS Endurance following flooding in the Strait of Magellan left Britain without a polar presence and forced the emergency charter of the then-Polarbjørn, while critics argue that the UK would need two vessels to maintain a simultaneous presence at both poles, against a backdrop of increased Argentine activity near the Falkland Islands.