A Russian captain has been arrested following a catastrophic collision between the cargo ship Solong and the US-flagged tanker Stena Immaculate in the North Sea. The crash, which occurred while the tanker (which was anchored) was carrying jet fuel for the US military, resulted in fires on both vessels and emergency rescue operations. The UK has launched a   criminal investigation, arresting the 59-year-old captain on suspicion of gross negligence, and also manslaughter because one crew member from the Solong is presumed dead (thirteen others were rescued). Experts are baffled by how such an incident could happen with modern navigation technology, which should have detected the tanker. Environmental groups have warned of a potential ecological disaster to nearby rare bird colonies if jet fuel leaks into the sea. Concerns were raised about sodium cyanide on board, but the ship’s owners denied that there was any hazardous cargo. This tragic event highlights the need for maritime safety and environmental protection.