Understanding the Points of the Compass
The compass is one of the first tools anyone new to navigation gets to know, and for good reason. It offers a simple, steady way to describe direction, whether you are reading about a passage, following a chart in a classroom, or revising for a theory course at home. Understanding how a compass names direction is a foundation that supports almost everything else you will study.
This guide introduces the compass and the points of the compass in plain terms. It is written for beginners, so it stays conceptual rather than technical. The aim is to help you build a clear mental picture that you can then explore in more depth through your own study and practice.
A full circle of direction
At its heart, a compass describes direction as a full circle around you. Imagine standing in the centre of a flat disc that stretches out to the horizon in every direction. Any way you might travel or point can be placed somewhere on that circle. The compass simply gives us an agreed language for naming those directions, so that one person can describe a heading and another can understand it in exactly the same way.
The four cardinal points
The circle is anchored by four main directions known as the cardinal points: north, east, south and west. North sits at the top of the circle as it is usually drawn, with east to the right, south opposite north at the bottom, and west to the left. These four points are equally spaced around the circle and act as the reference marks from which all other directions are described. Committing their order to memory is one of the first useful steps in learning to navigate.
The points in between
Between the cardinal points lie the intercardinal points, sometimes called the ordinal points. These are north-east, south-east, south-west and north-west, and each one sits midway between two neighbouring cardinal points. Together the cardinal and intercardinal points give eight named directions around the circle. Traditional compass roses divide the circle further still, adding finer points between these, but for beginners the eight main directions are enough to describe most everyday headings clearly.
Giving directions in degrees
As well as named points, directions can be given as degrees. The full circle is divided into 360 degrees, measured clockwise from north. In this system north is zero, and the numbers increase as you turn to the right through east, south and west before returning to the start. Degrees allow much finer detail than named points alone, which is why they are widely used when precision matters. For study purposes it helps to see the two systems side by side, so that a named direction and its rough position in degrees start to feel familiar together.
Understanding a relative bearing
So far we have described directions fixed to the world, where north always points the same way. A relative bearing works a little differently. It describes a direction relative to the vessel head, that is, relative to the way the vessel itself is pointing. From this viewpoint, straight ahead is the reference, and other objects are described by how far round they lie from that heading. Relative bearings are a helpful way to think about where something sits in relation to your own vessel, and they are a topic well worth practising until they feel natural.
Practising with Maritime Master
The free Maritime Master app is a good place to explore these ideas. It is an all-round maritime learning companion with interactive tools, and relative bearings are among the subjects it covers. Alongside them you will find material on the COLREGs, IALA buoyage, night lights and day shapes, the International Code of Signals flags with a recognition game, ropework and knots, and meteorology including the Beaufort scale and cloud types, together with exam practice. It works offline, so you can revise wherever you are. The app is free to download on the Apple App Store for iPhone and iPad.
Wider study with Skipper
When you are ready to broaden your navigation study, the free Maritime Master Skipper app supports a day skipper theory course. It offers interactive worked examples for position fixing, dead reckoning and course to steer that respond to the values you enter, along with tidal information, a range of calculators, and a compass deviation tool that steps through true to compass and back. It also includes guides to the COLREGs, IALA buoyage, meteorology, and passage planning and pilotage. Like Maritime Master, it works offline and is free to download on the Apple App Store for iPhone and iPad. It is designed to support a shorebased course rather than to replace one.
For study and revision only
A final and important note. Maritime Master and Skipper are study, learning and revision aids only. They are not for real-world navigation, and they are not a substitute for approved training or equipment. Real navigation is governed by official charts, publications and proper training, and any decision at sea should rest on those and on the guidance of a qualified instructor. Use these apps to build your understanding and confidence, and let formal, approved training carry that knowledge into practice.
