Planning a Navigation Course
Planning a Navigation Course
Understanding Navigation
Fundamentals of Navigation
- Grasp that navigation is the process of planning and executing a journey from one place to another.
- Understand that navigation uses landmarks, occasionally supplemented with tools, such as maps, compasses, and GPS units.
- Comprehend that good navigational skills are essential when travelling through unfamiliar areas or on off-road adventures.
Key Terminology
- Learn and understand essential terminology such as latitude, longitude, bearing, azimuth, grid reference, and waypoint.
- Latitude and longitude are a coordinate system used to locate any point on the Earth’s surface.
- The bearing is the direction to a target measured in degrees from north and usually in a clockwise direction.
- An azimuth is similar to a bearing but is measured in degrees from true north, not magnetic north.
- A grid reference relates to a specific grid square on a map.
- A waypoint is a reference point used in navigation, often to mark specific locations along the journey.
Planning a Navigation Course
Choosing a Route
- The first stage of planning a navigation course is to choose a route.
- Be aware of each route’s individual challenges, including distance, elevation changes, vegetation, and water hazards.
- Benchmark your expected speed, and calculate estimated journey times based on the type of terrain and fitness level.
- Choose routes that are within your physical abilities and compatible with the navigational tools available to you.
Using a Map and Compass
- Learn how to accurately read maps and use a compass.
- Recognise topographic maps represent three-dimensional terrain in two dimensions. Contour lines represent elevation change, while colours and symbols represent terrain and landmarks.
- Understand the concepts of magnetic north and true north, and know how to adjust for declination – the difference between the two.
- Learn to take a bearing from a map, which gives a definite route to follow.
Incorporating GPS
- Understand the potential benefits and limitations of GPS.
- Recognise that while GPS can provide exact location, speed, and direction, it requires power and satellite reception.
- Keep in mind that GPS should not replace traditional navigation methods but supplement them.
Checking and Correcting Errors
- Always double-check measurements and locations, an error in navigation can lead to significant problems.
- Learn to recognise and correct errors, for example, confusion between magnetic north and true north, misreading map symbols or grid references.
- Gain skills in navigational relocation, methods used to determine your location when lost.
- Verify the route is as expected using prominent landmarks. Always cross-check location against the map or GPS if unsure.
Executing and Adapting the Plan
- Stay aware of your location and surroundings at all times during the journey.
- Regularly check off landmarks and points on the map as you reach them.
- Be ready to adapt the plan if conditions change or unexpected problems arise. Always have contingency plans in place.