Lesson previewLifejacket Job and Readiness Chain1 section shown
Preview lesson
Lifejacket Job and Readiness Chain
What you will learn
Distinguish the job of a lifejacket from a buoyancy aid and use a six-stage readiness chain instead of treating any personal flotation device as complete protection.
Personal flotation starts with the job, then the person, task, actual unit, fit and boat response. A lifejacket is designed to support flotation and turn an unconscious wearer towards a face-up position; a buoyancy aid supports an active person but is not designed to do that job.
The words describe different performance intentions. The RYA describes lifejackets as designed to turn an unconscious person face up and keep the mouth and nose clear; buoyancy aids support flotation where entering the water and active self-recovery are expected, but will not turn an unconscious person face up. Designed to is not the same as guaranteed for every person, garment, sea state or recovery delay.
Selection is only the first link. The unit has to be within its intended scope and size range, in serviceable condition, worn before sudden immersion, adjusted over the current clothing and connected to a crew plan for alerting and recovery. A light, sprayhood, whistle, harness attachment or personal locating aid can add functions only when compatible and understood.
The readiness chain is: select the job; match the person and activity; inspect the actual unit; fit it over current layers; confirm accessories and the crew response; recheck after any change. A failure at one link is not cancelled by strength at another.
Lifejacket readiness board
Select, inspect, fit, brief and recheck the actual unit
Select a changing case to rehearse the decision evidence, the next aboard action and the unsafe inference. Every state is complete in text and does not depend on colour.
- 1Select the job
- 2Match person + task
- 3Inspect the actual unit
- 4Fit over current layers
- 5Confirm aids + crew plan
- 6Recheck after change
Readiness is a chain. A suitable product that is not worn, a correctly worn unit with a fault, or a working lifejacket without a recovery plan each leaves a different gap.
Decision
Choose personal flotation for the actual sailing task, likely recovery delay, night conditions, person, clothing and manufacturer scope. A lifejacket and a buoyancy aid do different jobs.
Check the evidence
Confirm the correct device, approval and size range; activation type; current inspection and service state; fit over the clothing being worn; and compatible light, sprayhood, whistle, harness or personal locating aid where the plan requires them.
Do not assume
A Newton label or the word lifejacket alone does not prove fit, automatic activation, face-up performance for this person and clothing, recovery capability or suitability for every activity.
Aboard action
Allocate the unit to a named wearer, fit it before risk conditions, and include its controls and the boat's recovery response in the departure brief.
Choose a changing case and compare the supported decision, evidence check, unsafe assumption and next aboard action.
Worked example
A guest is given the nearest inflatable lifejacket for an overnight coastal passage. It closes over a thick jacket, but nobody checks the stated size range, activation type, service status, crotch strap or recovery plan.
- 1Start with the job: an unexpected immersion at night where self-recovery and immediate assistance cannot be assumed.
- 2Match the named wearer and clothing to the exact model's size and use limits; do not infer suitability from the buckle closing.
- 3Inspect and fit the unit using its instructions, then include the light, sprayhood, manual control and boat recovery roles in the brief.
- 4If any link cannot be confirmed, withdraw that unit and provide a known-suitable, known-ready alternative before exposure begins.
Sense check: The decision has not promised face-up performance or rescue; it has converted a generic handout into a named, checked and briefed safety system.
| Link | Evidence | Unsafe shortcut |
|---|---|---|
| Job | Expected immersion, ability to self-help, operating area, visibility and recovery delay | Use any item labelled PFD for every activity |
| Person + task | Stated size and performance scope, clothing, mobility and manufacturer's limitations | Choose by body weight or Newton label alone |
| Actual unit | Cover, bladder evidence, straps, cylinder, firing head, dated items and service record | Assume a tidy cover proves internal readiness |
| Fit + wear | Model donning instructions, snug adjustment and secured crotch or thigh straps | Keep it in a locker until conditions worsen |
| Crew plan | Controls, accessories, alerting, location and person-capable recovery rehearsed | Assume flotation automatically returns the person aboard |
Run the chain for a named wearer
A locker contains several different lifejackets and buoyancy aids, while the crew has different sizes, layers and deck tasks.
1. Name the job
State the activity, entry likelihood, ability to self-help, operating conditions and likely recovery route.
2. Allocate and check
Match and inspect one actual unit for one person rather than briefing the locker as a group.
3. Fit and respond
Fit it over current layers and brief controls, accessories, alerting and recovery roles.
Sense check: A complete chain answers who will wear which checked unit, when, and how the rest of the crew will respond.
Common mistake or limitation
- Using lifejacket, buoyancy aid and PFD as if they guaranteed the same performance.
- Selecting on a Newton label, price or appearance without the person, clothing, activity and instructions.
- Treating flotation as a substitute for preventing the fall, raising the alarm and recovering someone unable to help.
Recap
- Start with the required job, not the nearest item in the locker.
- A suitable product still has to be inspected, worn, fitted and integrated with the crew response.
- No single label, feature or accessory completes the readiness chain by itself.
Optional quick check
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