Revision and assessment
0 of 2 hands-on
01 Introduction
This lesson brings the course together. Use the table and cards to check what you remember, then try the review questions. When you feel ready, take the final exam.
Objectives
- Recall the main ideas about risk and safe diving
- Apply them to short scenarios
- Prepare for the final exam
02 Watch
Course review
4 min · Video in production
- 1
A short tour through each lesson with one picture and one sentence.
- 2
A single dive replayed with each safety habit shown in turn.
- 3
A list of the habits: plan, check, stay together, watch your gas, stay within limits, speak up.
- 4
A preview of the exam format and pass mark.
03 Learn
The course at a glance
| Topic | Key idea | Habit |
|---|---|---|
| Why divers get into trouble | Incidents are chains of small events, with human factors behind many | Break the chain early |
| Risk | Risk is likelihood times severity, and controls reduce it. Avoiding is strongest | Use layers of protection and do not skip them |
| Planning and limits | A plan covers depth, time, gas, conditions, entry and exit, signals and emergencies | Agree limits on the surface and keep to them |
| Equipment checks | A buddy check finds what a self-check misses | Never dive with a known fault |
| Buddy and team | Stay close, agree signals and a lost-buddy plan | Search about a minute then ascend |
| Health and fitness | Honest forms, daily checks, fitness and medical advice | Sit out a dive when unwell |
| Responding early | Notice early signs and act early | Stop, breathe, think, act |
The safe diving habits
- Dive within your training, and build experience gradually.
- Make a plan, and agree it with your buddy.
- Check your equipment and your buddy's before every dive.
- Keep your buddy close, and watch your gauges and depth.
- Breathe continuously, and ascend slowly with a safety stop.
- Keep a reserve, and end the dive at the agreed pressure.
- Say so when you are unwell, uneasy or in doubt, and be willing to call the dive.
Common mistakes
- Skipping checks because nothing has gone wrong before.
- Going past a limit for 'just a minute'.
- Ignoring a small problem, hoping it will pass.
- Staying silent when unsure.
- Treating a guide or a computer as a substitute for judgement.
Exam guide
The final exam draws questions from every lesson. You need at least 80% to pass, and you must answer all the safety-critical questions correctly (marked "critical" in your review afterwards). If you do not pass, you will see which lessons to revisit.
04 Explore
Try it yourself
Flip the cards to test your recall.
Flip each card to check your answer.
Tap a card to flip it.
05 Apply
Scenario
A friend says: "I've done 300 dives with no problems. I don't bother with buddy checks any more."
What is the best reply?
06 Check
07 Summary
Key points
- Incidents are chains of small events. Break the chain early.
- Risk is likelihood times severity. Avoiding hazards is the strongest control.
- Plan, check, stay together, watch your gas, stay within limits and speak up.
- This course is attitudes and habits. Learn practical skills with a qualified instructor.
Before you apply this in the water
- Have I been trained by a qualified instructor for this?
- Am I medically fit to dive?
- Do I have a buddy and a plan?
- Am I diving within my training and limits?
Answer every question in the Check section to mark this lesson complete.