Blurs

For centuries, sailors searched for it. Cartographers drew it. Explorers sailed into the Atlantic hoping to find it.  Yet despite appearing on maps for more than 500 years, Hy-Brasil may never have existed at all. Part Irish legend, part cartographic mystery, Hy-Brasil remains one of the most fascinating phantom islands in history—a lost land said to emerge from the mist only once every seven years before vanishing once more into the Atlantic Ocean. In folklore, Hy-Brasil is often described as: - A paradise or “blessed island” - A land inhabited by supernatural beings, sages, or an advanced civilisation - A place associated with mystery, magic, and hidden knowledge The Island Hidden by Fog According to Irish folklore, Hy-Brasil lay somewhere west of Ireland, concealed by a perpetual veil of fog. The island was said to become visible only once every seven years, and even then it remained frustratingly out of reach. Those who attempted to approach it found it disappearing into the mi...

Blue-force tracking (BFT) is a capability that allows friendly military units to automatically share and display their own locations on digital maps. Its primary purpose is to improve coordination and reduce the risk of friendly-fire incidents. Instead of relying solely on voice radio reports like "We're at grid reference X," BFT systems periodically update unit positions automatically. Blue-force tracking is one part of a broader Common Operating Picture (COP), which includes: Blue forces: Friendly units. Red forces: Known or assessed adversary positions. White forces: Neutral organisations or civilians, depending on the operational context. How it works A typical BFT system combines: Position source: Usually a GNSS receiver (such as GPS or other satellite navigation systems) to determine a vehicle's or person's location. Communications network: Transmits location and status data over radio, satellite, cellular, or other military networks. Command-and-control sof...