Course modules
Start with the free revision module, then unlock all practice and revision features.
Getting started
Work through the revision path in order, then use each module's Practise and Test steps and flashcard pass to turn reading into recall.
2 modules are open now. Use the optional diagnostic beside this introduction to choose where to begin.
9 modules
Open the next module, or preview locked topics before unlocking.
Module 1
Not startedWhat radar shows, what it hides, how radar wave propagation affects returns, and why interpretation matters.
4 topics - lesson, quiz, and recall checks
Module 2
Not startedGain, sea clutter, rain clutter, tuning, range scale, trails, and display set-up.
4 topics - lesson, quiz, and recall checks
Module 3
Premium lockedUsing range rings, variable range markers, electronic bearing lines, and radar fixes.
4 topics - lesson, quiz, and recall checks
Module 4
Premium lockedTarget strength, target definition, reflectors, shadows, and separating close echoes.
4 topics - lesson, quiz, and recall checks
Module 5
Premium lockedRelative motion, closest point of approach, target trails, and manual plotting discipline.
4 topics - lesson, quiz, and recall checks
Module 6
Premium lockedUsing AIS and MARPA alongside radar without over-trusting either.
4 topics - lesson, quiz, and recall checks
Module 7
Premium lockedParallel indexing, clearing ranges, contour awareness, and pilotage in poor visibility.
4 topics - lesson, quiz, and recall checks
Module 8
Premium lockedRadar use with COLREGs Rule 19 thinking, sound signals, speed, and lookout.
4 topics - lesson, quiz, and recall checks
Module 9
Premium lockedDecision practice for crossing targets, landfall, harbour approach, and false echoes.
4 topics - lesson, quiz, and recall checks
Audio revision is available. Listen to 3 short recaps alongside the modules.