Using a Map and Compass on Coastal Paths

By Why Dune Slacks Matter for Rare Insects
Comments 35
15 Jul 2026

Using a Map and Compass on Coastal Paths

Why coastal navigation catches people out

British coastal paths have a reputation for being straightforward. You can see the sea, after all. But that confidence fades when you're on a dune system in Norfolk, the path has vanished under marram grass, and grey fog has swallowed the horizon. Coastal routes are often poorly signposted, especially across open sand or shingle. Marker posts get buried, waymarks fade, and the line between a footpath and a rabbit track becomes impossible to read. Add sudden sea fog, which can roll in within minutes, and you have a recipe for a long detour. Mobile signal is patchy on many stretches, so a paper map and compass aren't nostalgia. They're your primary tools.

Choose a map that shows the dunes and the shore

A 1:25,000 scale map is the sweet spot. It shows field boundaries, footpaths, permissive paths, dune slacks, saltmarsh, and the high-water mark. A 1:50,000 map hides the small paths and gates that get you off a beach or through a dune belt. Buy a waterproof version or carry a map case, folded so the section you need is visible.

Before you set off, study the map and identify:

Handrails — linear features like the coast path, a fence, or a stream.
Catching features — landmarks that tell you you've gone too far, such as a car park or river mouth.
Escape routes — inland paths, dune gaps, or minor roads. Mark two or three with a pencil.
Hazards — mudflats, tidal creeks, steep shingle, and firing ranges.

Note grid references for your start and escape routes. A grid reference is far more useful than "near the big dune".

Compass skills for sand, shingle, and cliff tops

A compass rewards practice. Set the map to the ground: place the compass on the map, align the orienting arrow with the grid lines, and turn until the red needle points to the top. In the UK, magnetic north is a few degrees west of grid north, but at 1:25,000 you can usually ignore that unless crossing large open areas.

To take a bearing, point the direction-of-travel arrow at your target, rotate the bezel until the red needle sits in the orienting arrow, then read the number. Hold the compass flat and walk on that bearing, looking up regularly to pick a distant object. In fog, count your paces. Most adults take 60 to 70 double paces per 100 metres on flat sand, but this changes with terrain and fatigue.

Use handrails whenever you can. Following a bearing across open dunes is slow and error-prone. Aim for a fence line, a stream, or the coast path, then follow it. If aiming for a specific point on a linear feature, deliberately aim off to one side so you know which way to turn when you hit it.

When the fog rolls in

Sea fog is the coastal walker's biggest navigation hazard. It can reduce visibility to a few metres, and sound behaves strangely. If fog catches you, stop. Put on extra layers, eat something, and drink water. Panic is the enemy.

Take a bearing to your next known point or an escape route. Walk slowly, counting paces, and check your compass every few minutes. Follow a handrail if you have one. If unsure, stop and re-locate using the map, compass, and any features. Don't rely on your phone as your only tool; batteries die in the cold and wet. A whistle signals for help, and a torch helps you read the map.

If truly lost and the fog isn't lifting, retrace your steps to the last certain point. Heading blindly towards the sound of waves is dangerous — you could walk onto mudflats or off a cliff. Use your map to find a safe inland direction, keeping the sea on a consistent side.

Escape routes and wildlife welfare

Coastal dunes are fragile. Natterjack toads breed in dune slacks, sand lizards bask on bare sand, and ringed plovers, oystercatchers, and little terns nest on shingle. Seals haul out on remote shores. When planning escape routes, choose existing paths. If you must cross unpathed ground, do it quickly and avoid conservation areas. Keep dogs on leads during nesting season, and never approach seals.

Your escape route should take you inland to a road or larger path. Look for gaps between dune ridges, marked footpaths, or tracks to farms. Some coastal paths are cut off at high tide, so check tide tables. A route that works at low tide may be a trap two hours later.

Practice, preparation, and peace of mind

Build skills on short, familiar walks. Practise bearings in good visibility, then try a misty route with a friend. Carry a paper map and compass even when the forecast is perfect; coastal weather changes fast. Tell someone your route and expected return time. Pack a whistle, torch, spare food, and a warm layer.

Navigation is not about being an expert. It's about being deliberate. A map and compass give you the freedom to explore British coastal dunes and shoreline walks with confidence, knowing you can find your way back if the fog rolls in. Enjoy the wildlife, respect the paths, and keep your compass handy.

Coastal Walks

Teaching Children to Respect Beach Wildlife

Use a long lens and keep your distance from nests. Stay low, move slowly and avoid trampling fragile mosses or lichen.

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5 Comments

Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply
- John Abraham says Jul 21, 2024 at 10:00am
  
  I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
  Reply
  - Robert Sonnysays Jul 21, 2024 at 10:00am
    
    I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
    Reply
Robert Sonny says Jul 21, 2024 at 10:00am

I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system
Reply

Jenny Watson

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