Uneven Surface Hazard Sign HS0070

Uneven Surface Hazard Warning Sign

The HS0070 Uneven Surface Hazard sign flags a section of deck, walkway, gangway, or compartment floor where footing changes without notice, giving crew and visitors a clear signal to slow down before a trip or fall happens. This is the standard ISO 7010 pictogram for Uneven Surface, shown in the familiar black-on-yellow triangular format used across the ISO 7010 hazard warning family. As a language-independent symbol it works the same way for a longtime deckhand, a new rating, a contractor, or a visiting surveyor, so an uneven surface hazard is understood at a glance rather than explained after someone has already stumbled.

Within the Hazard Signs range at Safety Sign Hub, HS0070 sits alongside the other trip, slip, and fall warning signs vessels rely on to mark changeable deck conditions. Shipboard crews typically fit it at engine room gratings, deck plate transitions, cargo hold coamings, stairwell landings, weather deck areas with raised fittings, pipe runs and cable trays crossing walkways, and threshold plates between compartments. It is also commonly used temporarily around recent repairs, welding patches, or deck works where the surface profile has changed but has not yet been fully reinstated to its original level.

Like the rest of the Hazard Signs catalogue, HS0070 is produced on marine-grade rigid or self-adhesive substrate, built to resist UV exposure, saltwater spray, and the humidity swings typical of both weather decks and below-deck spaces. A photoluminescent option is available for compartments where lighting can fail or dim, keeping the uneven surface hazard visible during blackout conditions or emergency transits.

Why Uneven Surface Hazards Matter

Slips, trips, and falls remain one of the most common causes of injury aboard ships, and an unmarked uneven surface hazard is often the only warning a person gets before contact. A raised coaming, a warped deck plate, or a step where none is expected can cause anything from a twisted ankle to a fracture, and near an open edge or ladder the consequences escalate quickly. Clearly marking the uneven surface hazard gives people the split-second reaction time needed to adjust their stride, and it gives officers a fixed reference point during safety rounds, near-miss reporting, and toolbox talks about deck conditions.

Compliance and Certification

HS0070 reproduces a registered ISO 7010 safety sign, the internationally recognised system of graphical symbols intended to be understood regardless of language aboard multinational crews. General IMO guidance on shipboard safety signs and SOLAS’s broader requirements for safe means of access and safe working conditions both support the consistent use of hazard pictograms like this one, and Port State Control officers and classification society surveyors routinely check that walkways, gratings, and deck transitions are properly signed during inspections. For the full specification of the pictogram set, see the ISO 7010 registered safety signs standard.

Installation Recommendations

Fit HS0070 immediately before the change in deck level rather than on top of it, so the hazard is flagged while there is still room to adjust footing. Self-adhesive versions bond well to clean, dry, flat vertical surfaces such as bulkheads, hatch coamings, or handrail stanchions near the hazard; rigid panels suit higher-traffic areas or locations exposed to wash-down and weather. Where the hazard covers an extended run, such as a long corridor with staged deck transitions, consider pairing the sign with contrasting deck marking tape so the warning is reinforced at floor level as well as at eye height.

• Reproduces the registered ISO 7010 pictogram for Uneven Surface
• Marine-grade rigid or self-adhesive construction for shipboard fitting
• UV-stable and saltwater resistant for weather deck and below-deck use
• Optional photoluminescent finish for low-light and blackout visibility
• Compact format suited to gratings, coamings, and tight deck transitions

Order HS0070 to keep every deck transition and walkway clearly marked, and browse the full Hazard Signs range or the Fire Fighting Signs collection to complete your vessel’s safety signage.