What the exam actually covers
Yachtmaster Theory is the same syllabus for Coastal and Offshore — the practical exam differentiates them. The theory paper covers:
- Position fixing — three-point, running fix, transferred LOP, GPS waypoint navigation
- Course to steer — vector triangles with tidal stream, leeway, set/drift
- Tidal heights and streams — Rule of Twelfths, secondary ports, atlas use
- Passage planning — IMO 4 stages, contingencies, weather windows
- Meteorology — synoptic charts, fronts, sea/land breezes, isobaric analysis
- Lights, shapes, sounds — full COLREGS Annex I/II/III
- Rules of the road — full COLREGS Part B (Rules 4–19)
- Buoyage — IALA A and B, cardinal/lateral/special
- Pilotage — harbour entry plans, transit lines, leading marks
- Safety — MOB, distress, abandoning ship, first aid basics
Two papers, 3 hours each. Chart plot, navigation calculations, and rules questions. Both papers must be passed independently.
The five topics where most candidates lose marks
Instructors and examiners are remarkably consistent on this. Drill these five and the pass mark looks after itself.
1. Tidal calculations — by a long way
Rule of Twelfths, secondary ports, springs/neaps interpolation. More candidates fail on tides than on any other single topic. The mistakes are almost always procedural: wrong correction direction, applied to the wrong tide, or simple BST/GMT errors. Tidal cheat sheet here.
2. Course to steer with tidal stream
The vector triangle: track + tide = course to steer. Common mistake: drawing the tide vector from the wrong point, or confusing “course to steer” with “course made good.” Practise on the chart drill sheets until the triangle is automatic.
3. COLREGS — beyond the basic rules
Many candidates know Rules 13–17 (overtaking, head-on, crossing) but trip on Rule 18 (responsibility between vessel types) and Rule 19 (restricted visibility). Lights, shapes, and sound signals are easy marks if you have the mnemonics — see our ColRegs lights cheat sheet and day shapes interactive reference.
4. Synoptic chart interpretation
You will be shown a Met Office surface analysis chart and asked what weather to expect over the next 24–48 hours. The skill is reading isobars (pressure gradient = wind strength), identifying fronts and their movement, and predicting wind shifts. Spend time on actual archived charts — the Met Office publishes daily.
5. Passage planning — full appraisal
Candidates rush through the IMO 4 stages (Appraisal, Planning, Execution, Monitoring) without showing depth in Appraisal — weather windows, daylight, tidal gates, crew capability, fuel range, contingencies. The exam rewards detail. Use the passage planning checklist as a structured framework.
An 8-week study schedule
Most candidates underestimate the time. A realistic schedule, 5–8 hours per week:
Day-of strategy
Bring the right kit
- Almanac (Reeds Nautical Almanac or equivalent — current year)
- Parallel rulers or Portland plotter
- Dividers
- 2H pencils (sharpen before; pencils last longer than 2H, sharpen quicker than 4H)
- Eraser — soft, white, not the one on the end of a pencil
- Highlighter (yellow) for marking off the chart-plot working
- Calculator — basic, scientific not required
- Spare batteries if calculator is electronic
Read the whole paper first
Five minutes flipping through reveals which questions are time-heavy (chart plot) and which are quick (rule-of-the-road). Plan: do the quick wins first to bank marks, then tackle the chart plot with time pressure removed.
Show your working
Yachtmaster theory awards method marks, not just answer marks. A correct answer with no working scores less than a wrong answer with all steps shown. Write out the formula, plug in the numbers, mark the units. Even if the final number is wrong, you keep 70–80% of the marks for that question.
Label your chart plot
Every line on the chart should be labelled: course in degrees, speed in knots, time, fix type (EP, observed, GPS). Unlabelled plots cost marks even when geometrically correct. Use the standard symbols: arrowed line for course/track, fix with a circle, EP with a triangle.
Eat. Sleep. Hydrate.
Six-hour total exam day. Bring water, a slow-release snack, and no caffeine after the first hour. The wrong-answer rate climbs steeply in hour 4 onwards for tired candidates. Sleep 8 hours the night before. Skipping breakfast loses more marks than any single topic.
If you fail one paper
A pass on one paper carries over for a year. If you fail one and pass the other, you only need to retake the failed paper, normally within 12 months. Most schools will let you re-sit at the next examiner's visit (often 4–8 weeks later). Failing both is rare and almost always indicates not enough preparation time — the answer is the 8-week schedule above, not another attempt next month.
Start drilling now
Practice questions are the highest leverage
The single highest-leverage preparation is practice questions. Reading is necessary but insufficient. The free quizzes here cover most of the Yachtmaster syllabus: