If you provide the actual lifejacket instruction card (photo or PDF text), I can give you a specific pass/fail report with recommended redesign.
Put on a sleep mask or close your eyes. Simulate darkness, smoke, or inverted conditions. Don the lifejacket from its storage bag correctly without looking. Time yourself. Aim for under 30 seconds. eval lifejacket donning instructions
| Criterion | Score (1–5) | Comments | |-----------|-------------|----------| | Visual clarity | 3 | Only line drawings; no indication of front vs back | | Text readability | 2 | Font size ~2 mm; step 3 mixes “belt” and “buckle” without diagram | | Step sequence | 4 | Logical, but step 4 (inflation) should be after all straps adjusted | | Self‑check cues | 1 | None – no “pull up on shoulders to test fit” | | Failure warnings | 1 | No warning about crotch strap (if present) or inversion risk | | Symbol compliance | 2 | Uses “pull” symbol, but no IMO donning order symbols | | No language dependency | 2 | Fails without English text | | Emergency focus | 3 | Includes storage info in donning section (distraction) | If you provide the actual lifejacket instruction card
Overall: Not adequate for untrained users in darkness. Use this checklist to don a typical adult
Use this checklist to don a typical adult lifejacket (Type I/II/III/V) safely and quickly. Follow manufacturer instructions if available.