No Entry – Unauthorised Access Sign (ISPS0021

No Entry – Unauthorised Access Sign (ISPS0021 | IMPA 33.8544 | ISSA 47.585.44)

This unauthorised access sign gives crew, contractors, visitors and port officials a direct, unambiguous instruction: entry beyond this point is restricted to authorised personnel only. Typically posted at gangways, deck hatches, engine room doors and cargo control rooms, it marks the boundary between public-facing areas and spaces under heightened security control.

Within Safety Sign Hub’s ISPA Signs range, this unauthorised access sign sits alongside the wider family of maritime security signage used to enforce restricted-zone boundaries aboard ship and across port facilities. It is commonly fitted at gangway checkpoints, crew-only stairwells, security offices, cargo holds, mooring decks and perimeter fencing. Operationally, it plays a defined role within the vessel’s Ship Security Plan or the terminal’s Port Facility Security Plan, giving visual force to the access-control measures the Ship Security Officer or Port Facility Security Officer has set for that zone.

Each sign is produced on rigid marine-grade board or self-adhesive vinyl, engineered to resist UV exposure, saltwater spray and general shipboard wear, with a photoluminescent option where the area also sits on a low-light escape or patrol route.

Why Unauthorised Access Matters

Unauthorised access into restricted shipboard or port facility zones is one of the more preventable security failures under the ISPS Code, yet it remains a recurring finding in Port State Control inspections and internal drills. A missing or faded sign at a gangway, cargo control point or restricted deck weakens the visible perimeter that crew and shore staff rely on to challenge unfamiliar faces, and can let undocumented visitors, stowaways or opportunistic intruders move through a facility unscreened and unlogged. Signage does not replace access-control procedures or watchkeeping, but it is the first line of defence reminding everyone where the boundary sits, and that crossing it without authorisation is a security breach, not a grey area.

Compliance and Certification

This unauthorised access sign supports the security-signage requirements set out under the ISPS Code (the International Ship and Port Facility Security Code, part of SOLAS Chapter XI-2), rather than functioning as an ISO 7010 hazard pictogram – it is not registered as one and should not be described as such. Placement and wording should always be checked against the vessel’s approved Ship Security Plan (SSP) or the facility’s Port Facility Security Plan (PFSP), signed off by the Ship Security Officer (SSO), Company Security Officer (CSO) or Port Facility Security Officer (PFSO) responsible for that security level. During ISPS audits, Port State Control officers and classification society surveyors routinely check that the signage installed on board or dockside matches what is documented in the approved Security Plan, so keeping it current with any plan amendment is a practical compliance step, not just housekeeping.

Installation Recommendations

Mount this unauthorised access sign at eye level on the approach side of the restricted boundary – on the gangway housing, at the cargo control room entrance, or on doors to crew-only or engine spaces – so it is the last thing seen before crossing into the controlled zone. On exterior or high-exposure locations, fix with marine-grade fasteners or high-tack adhesive rated for saltwater and vibration; for interior corridors and offices, self-adhesive vinyl on a clean, dry surface is generally sufficient.

• Rigid marine-grade board or self-adhesive vinyl construction for hull, deck and interior mounting
• UV-stable and saltwater-resistant inks for long service life in marine and port environments
• Reproduces the standard IMPA 33.8544 / ISSA 47.585.44 wording and layout used across ISPA signage
• Optional photoluminescent finish for restricted areas along low-light or emergency egress routes
• Available in multiple sizes to suit gangways, doorways, bulkheads and perimeter fencing

Fit this unauthorised access sign wherever your Ship Security Plan calls for a visible restricted-zone marker, and browse the full ISPA Signs range alongside related Mandatory Signs to complete your compliance signage set. For general access wording rather than this specific notice, see the companion Restricted Area / Authorised Personnel Only sign elsewhere in the range.