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Lifeboats and liferafts

Liferafts, evacuation systems and personal life-saving appliances

Liferafts, evacuation slides, lifejackets, immersion suits, flares and beacons: how each one is serviced and tested.

8 lessons 1 h 49 min Practical 3D simulator in every lesson Course completed card

Written by Al Safwan Marine service engineersRules checked 20 October 2026

Lesson 1 is open to everyone. An account (just your email) opens all 8 lessons and saves your progress.

What you'll learn

  • Read a liferaft’s stowage and float-free arrangement and spot a wrongly rigged painter, weak link or HRU in seconds.
  • Know what an approved service station does at each annual service, and which tests become due in years 5, 10 and later.
  • Plan servicing so it stays within 12 months, use the flag extension rules correctly, and handle 30-month extended-service liferafts.
  • Run the rotational deployment of a marine evacuation system and know what makes it a pass or a fail.
  • Inspect lifejackets, lights, immersion suits and thermal protective aids to the IMO checklists, and know when air pressure tests are due.
  • Manage flares from stowage to lawful disposal, and check an EPIRB and SART against the annual test and five-year shore-based maintenance guidelines.

Course content

8 lessons · 1 h 49 min total

Lesson 1 is open to everyone. An account opens the rest.

1 Liferaft types and how they are stowed 15 min · 3D simulator · Quiz Open

You will be able to name each part of a liferaft stowage, say why it is there, and spot the rigging mistakes that stop a raft from floating free.

Open lesson 1

2 Annual liferaft servicing at an approved service station 16 min · 3D simulator · Quiz With an account

You will know what happens to your liferaft at each service, which extra tests fall due in years 5, 10 and beyond, and how to keep the interval legal.

See how lesson 2 starts

3 Hydrostatic release units: disposable, serviceable and rigged right 13 min · 3D simulator · Quiz With an account

You will know how an HRU works, how to tell when it is due, how to fit one correctly, and what the surveyor and PSC officer check.

See how lesson 3 starts

4 Marine evacuation systems and rotational deployment 14 min · 3D simulator · Quiz With an account

You will be able to plan an MES rotation, run a deployment the way the flag expects, and know what to do when one fails.

See how lesson 4 starts

5 Lifejackets and lifejacket lights 12 min · 3D simulator · Quiz With an account

You will know how many lifejackets of which sizes a ship needs, what makes one compliant, and who checks, services or replaces what and when.

See how lesson 5 starts

6 Immersion suits, anti-exposure suits and thermal protective aids 14 min · 3D simulator · Quiz With an account

You will be able to inspect an immersion suit properly, know when its seams must be air tested, and know how flags treat suits over ten years old.

See how lesson 6 starts

7 Pyrotechnics: expiry, stowage and disposal 12 min · 3D simulator · Quiz With an account

You will know which pyrotechnics a ship carries, how to read and manage their expiry, how to stow them, and what to do with old ones.

See how lesson 7 starts

8 EPIRB and SART: annual tests and shore-based maintenance 13 min · 3D simulator · Quiz With an account

You will know what the radio surveyor checks on the EPIRB and SART each year, what happens at shore-based maintenance, and how to keep the beacon's identity right.

See how lesson 8 starts

Course completed card
With your name and a link anyone can check
At the end

Inside a lesson

Every lesson in this course has the same five steps: a primer, a 3D tour of the part (Watch it), the reading, a task you do on the 3D machine yourself (Try it) and a short quiz. 8 lessons use this simulator.

Liferafts in their cradles on a ship's side with the hydrostatic release, an evacuation slide, and the lifejackets, immersion suits, flares and EPIRB

Who this is for

  • Deck officers
  • Engineers
  • Superintendents
  • Service technicians
  • Surveyors

No experience needed: every lesson starts with a short primer in plain words.

Your Course completed card

Finish every lesson to get a Course completed card with your name and a QR code anyone can scan to verify.

Share it on LinkedIn, WhatsApp and elsewhere, or download the picture.

It shows you completed online familiarisation training. It is not a certificate or an STCW, flag-approved or manufacturer qualification, and it doesn't replace that training.

About this course

A lifebuoy on a ship's rail beside its IMO sign: lifebuoy with light and smoke
Photo: Jamille Garsula on Unsplash

A liferaft spends years in a white canister on deck. Nobody sees inside it until the day it goes to the service station or the day the ship sinks. In between, it has to float free, inflate in a minute and keep people alive. The same is true of the gear around it: the hydrostatic release that frees it, the lifejacket and immersion suit each person wears, the flares, and the beacon that tells a rescue centre where to look. Almost all of it is checked by the crew once a month and opened, tested and repacked by a shore-based specialist on a fixed cycle set by SOLAS chapter III, the LSA Code and IMO guidelines.

The small things are where it goes wrong. In 2021 the Australian Maritime Safety Authority issued over 100 deficiencies for wrongly fitted hydrostatic release units on liferafts and float-free EPIRBs, most often a painter not tied to the weak link. From 1 January 2023 immersion suit defects (stiff zips, failed seams, overdue air tests) made up nearly a third of all life-saving deficiencies found in Marshall Islands flag inspections. The UK told the IMO about marine evacuation systems that failed at their six-yearly test deployment, and the Bahamas now asks for a report on every one.

This course goes through each item in the order you would meet it on deck, from the liferaft cradle to the EPIRB bracket. For each one you will see what the rules say, who does what and how often, what the service record should show, and what port state control officers and surveyors write up.

Written by Al Safwan Marine's service engineers from SOLAS, the IMO codes and circulars, and class and flag rules. The sources are listed at the end of every lesson.

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8 lessons1 h 30 minIntroductory

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Lifeboats, rescue boats and davits

How lifeboats, rescue boats and their davits work, how they are examined and load-tested, and how to drill safely.

9 lessons2 h 10 minPractical

Ready? Lesson 1 takes 15 minutes.

Free during our launch period. On your phone or computer, no password.

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Liferafts and personal life-saving appliances8 lessons
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