A British Royal Navy warship collided with a Russian submarine while on patrol in the North Atlantic Ocean in late 2020, it has been revealed. The collision took place when HMS Northumberland, a Type 23 frigate, was searching for the submarine after it disappeared from the ship’s view in the Arctic Circle. The submarine hit and damaged the warship’s sonar—a piece of equipment being towed hundreds of metres behind it, which was fitted with sensitive hydrophones for listening underwater. As a result, the warship had to return to a port in Scotland to get the sonar replaced. The incident was captured by a documentary crew from Britain’s Channel 5 television network, who were filming a series called Warship: Life At Sea. The Ministry of Defence (MoD), which does not usually comment on operations, has confirmed the incident because it was caught on camera. A spokesman for the MoD said: “In …