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ICC Theory Test Prep (Powerboat)

International Certificate of Competence theory for coastal waters.

Written against the published specification.

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Pass mark 15/20 30 minutes RYA How many can I get wrong?
About this practice. Revision Robin is built and maintained by Bloor Engineering Ltd, a UK-registered company. Our ICC Theory Test Prep (Powerboat) questions are written and reviewed in-house to match the current syllabus, each with a plain-English worked explanation. They are original practice material, not the official exam questions and not affiliated with or endorsed by RYA. Always confirm current test rules, fees and content with the official provider. See our Terms and Privacy.
Little and often beats one big session. Five minutes on the bus counts.
Free practice questions
Try 3 real ICC Theory Test Prep (Powerboat) questions
Have a go, then reveal the worked explanation. A taster from a bank of 252 original questions. Unlock for unlimited drills and full timed mocks.
Q1. Under the Colregs, when two power-driven vessels are approaching each other on reciprocal or nearly reciprocal courses so as to involve risk of collision, what must each vessel do?
  • A.  Alter course to starboard so each passes on the port side of the other
  • B.  Alter course to port so each passes on the port side of the other
  • C.  Maintain course and speed until one vessel signals intent
  • D.  Whichever vessel is faster has right of way and holds course
Show answer & explanation
✓ Answer: A. Alter course to starboard so each passes on the port side of the other
Rule 14 (head-on situation) requires each power-driven vessel to alter course to starboard so that they pass port to port. Altering to port would risk closing the gap and increases collision risk. Speed has no bearing on right of way in a head-on situation.
Q2. What shape and colour is a South Cardinal mark's topmark in IALA Region A buoyage?
  • A.  Two black cones both pointing down
  • B.  Two black cones both pointing up
  • C.  A single black cone pointing up
  • D.  Two black cones point to point (base to base)
Show answer & explanation
✓ Answer: A. Two black cones both pointing down
A South Cardinal mark carries two black cones, points down (base to base at the top), indicating safe water lies to the south of the mark. Remembering the cone direction (points towards the safe side) is the standard mnemonic used in RYA theory.
Q3. On a chart using a Mercator projection, which statement about a straight line drawn between two points is correct?
  • A.  It represents true distance but not a constant compass course
  • B.  It represents a rhumb line, a course of constant compass bearing
  • C.  It always represents the shortest possible route between the points
  • D.  It represents a line of constant latitude only
Show answer & explanation
✓ Answer: B. It represents a rhumb line, a course of constant compass bearing
A Mercator chart is designed so that a straight line drawn on it is a rhumb line — a track that crosses every meridian at the same angle, meaning a constant compass course. It is not necessarily the shortest route (a great circle) except over short distances typical of coastal powerboating.
Exam mode
Full mock exam
20 random questions, real timing, marked against the official pass mark. Different every time.
The first 8 of 20 questions are free, with your score on them. Finishing the paper, your result against the pass mark and every answer explained come with the paid version.
Practice material only. This is revision practice, not official training, assessment or certification, and not a substitute for the required course or supervised experience. Always confirm the current requirements with the official awarding body or test provider before relying on it.
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Topic drills
Ten quick questions on one topic, marked instantly with explanations.
1 free drill left.
Colregs essentials · 38
Buoyage & pilotage · 34
Charts & position basics · 70
Safety equipment & procedures · 39
Weather basics · 36
Regulations & documents abroad · 35

Who has to sit the ICC Theory Test Prep (Powerboat)

Who needs a ICC Theory Test Prep (Powerboat)?

Individuals (aged 16 or over) who are UK residents/eligible nationals and plan to operate or charter powerboats in foreign waters, particularly in many European countries.

What it costs, and what a resit costs

How much does the ICC Theory Test Prep (Powerboat) cost?

Real exam fee: £59 for non-RYA members, free for RYA members (ICC application fee)

How hard is it

How hard is the ICC Theory Test Prep (Powerboat)?

Difficulty: Moderate for adequately prepared individuals; can be challenging without proper theoretical understanding.

Why people fail it

Why do people fail the ICC Theory Test Prep (Powerboat)?

Figures for the real exam from vertexaisearch.cloud.google.com, checked October 2026. Fees and rules change, so confirm with the test provider before you book.
ICC Theory Test Prep (Powerboat): common questions
Frequently asked
How many questions are in the ICC Theory Test Prep (Powerboat)?
The exam has 20 questions. Every Revision Robin mock uses the same 20-question format so your practice matches the real thing.
What is the pass mark for the ICC Theory Test Prep (Powerboat)?
You need 15 out of 20 correct to pass, which is about 75%. Our mocks mark you against this exact threshold.
How long do you get?
The test is timed at 30 minutes. Our full mock runs on the same clock so you can practise your pacing.
Are these the real exam questions?
No. Our questions are original and written to match the current syllabus, so they give realistic practice without copying the official paper. Every answer comes with a plain-English explanation. Always confirm current rules and content with RYA.