SAR Terminology

Terminology: Water Search and Rescue

Welcome to the Keokuk Volunteer Emergency Corps’ terminology page focusing on water search and rescue operations. Here you will find key terms and concepts related to water-based emergency response activities.

  1. Diver Down Flag: The diver down flag is a maritime signal indicating that there is a diver in the water. This flag, typically red with a white diagonal stripe, alerts boaters and other watercraft operators to the presence of divers below the surface. It is essential for promoting diver safety and awareness to prevent accidents.
  2. Swift Water Rescue: Swift water rescue refers to the specialized techniques and training used to rescue individuals stranded or in distress in fast-moving water environments, such as rivers or streams. These operations often involve the use of specialized equipment like throw bags, rescue ropes, and inflatable rescue boats.
  3. Personal Flotation Device (PFD): A personal flotation device, commonly known as a life jacket, is a crucial piece of equipment designed to keep individuals afloat in the water. PFDs are essential for enhancing the safety of rescuers and victims during water search and rescue operations.
  4. Underwater Communication System: An underwater communication system is a technology used by divers to communicate with each other or surface personnel while submerged. These systems may include specialized masks with built-in radios or hand signals for effective underwater communication.
  5. Tethered Swimmer: A tethered swimmer is a trained individual who swims while attached to a safety line during water rescue operations. This technique allows rescuers to maintain contact with the swimmer and provide assistance if needed in challenging conditions.
  6. Sonar Equipment: Sonar equipment uses sound waves to detect underwater objects and structures, making it a valuable tool for conducting underwater searches during water rescue operations. Sonar technology can help locate missing persons, submerged vehicles, or other objects in bodies of water.
  7. Cold Water Immersion: Cold water immersion refers to the dangerous condition of being exposed to cold water for an extended period, which can lead to hypothermia and other life-threatening consequences. Rescuers must be trained to address the challenges posed by cold water immersion during search and rescue operations.
  8. Recovery vs. Rescue: In water search and rescue operations, “recovery” refers to the retrieval of deceased individuals, while “rescue” involves saving individuals who are still alive and in distress. Rescuers must be prepared to transition from search and rescue efforts to recovery operations as needed.
  9. Rapid Deployment Craft (RDC): RDCs are small, inflatable boats used for swift water rescue operations. These versatile crafts are easily maneuverable in fast-flowing water and allow rescuers to reach victims quickly in challenging conditions.
  10. Hydrology: Hydrology is the study of water distribution and movement in the environment. Understanding hydrological principles is essential for predicting water flow patterns, flood risks, and other factors that impact water search and rescue operations.
  11. Dry Suit: A dry suit is a waterproof garment worn by divers and rescuers to protect against cold water exposure. Unlike wetsuits, dry suits prevent water from entering and insulate the wearer, making them suitable for extended periods in cold water environments.
  12. Siltation: Siltation is the process of sediment accumulation in bodies of water, which can reduce visibility and complicate underwater search and rescue operations. Rescuers must be prepared to navigate silt-laden waters effectively to locate and assist individuals in need.

Keokuk Volunteer Emergency Corps is committed to promoting safety and professionalism in water search and rescue operations. If you have any questions or would like to learn more about our water rescue services, please do not hesitate to contact us. Stay safe on the water!

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