3L‑SI™ Low Location Lighting System Inspection

3L‑SI™ Low Location Lighting System Inspection & Certification

Signwell is an authorized provider of DNV‑approved Low Location Lighting System (LLL) certifications. Our 3L‑SI™ Inspection Service goes beyond standard measurements, delivering a complete evaluation of your vessel’s escape route guidance system to ensure accuracy, effectiveness, and full compliance with international maritime safety regulations.

Detailed Findings Report

Every inspection includes a comprehensive Findings Report that documents system performance, luminance levels, and regulatory compliance. This helps shipowners maintain safety standards, avoid costly deficiencies, and prepare for audits with confidence.

Mandatory 5‑Year Certificate Renewal

Under IMO Resolution A.752(18), all passenger vessels must renew their Low Location Lighting System Certification every 5 years. Periodic measurements must strictly follow IMO and SOLAS requirements and be conducted by an approved authority.

As a DNV‑authorized service supplier, Signwell provides certified measurements and re‑approval services for all vessel types, covering both:

Scroll to Top