Do Not Obstruct Sign

Do Not Obstruct Sign

Fire doors, escape hatches, emergency equipment lockers, extinguisher recesses and control panel access all depend on the space in front of them staying completely clear, yet these are exactly the spots where stray equipment, stores or cargo lashings tend to accumulate during a busy voyage. A do not obstruct sign gives crew, contractors and stevedores an immediate, unmistakable warning that a specific door, hatch, panel or floor area must be kept clear at all times, whatever else is competing for deck or passageway space that day.

Presented in the familiar ISO 7010 prohibition format, this do not obstruct sign uses a red circular band and diagonal bar over a black pictogram, on a white background, so the instruction is understood at a glance regardless of the reader’s first language. A do not obstruct sign works particularly well in this role because it removes any ambiguity about whether a temporary item left “just for now” is acceptable in that exact spot.

Where This Prohibition Sign Belongs Onboard

Common locations include the floor space in front of fire doors and emergency exits, access panels to switchgear and control equipment, extinguisher and fire hose recesses, escape route hatches, and life-saving appliance stowage points. Following AS 1319 principles for prohibition signage, a do not obstruct sign should be positioned directly at the area it protects, at a height and location that is obvious to anyone about to set something down nearby, rather than as a general notice elsewhere in the compartment.

Safety Sign Hub manufactures this do not obstruct sign in a rigid, fire-retardant photoluminescent material that charges under ambient lighting and continues glowing for hours if power is lost. That performance matters directly here, because the areas a do not obstruct sign protects, such as escape routes and firefighting equipment, are precisely the places crew most need to locate quickly during a blackout, fire or other emergency.

A Practical Control for Busy Working Vessels

Unlike signage tied to a specific marine catalogue code, this do not obstruct sign is a general-purpose prohibition notice that vessel operators, port facilities and shore-based sites can apply wherever a clear-access requirement needs reinforcing, from engine room walkways to warehouse fire exits. Safety Sign Hub supplies this do not obstruct sign to Australian-flagged ships, terminal operators, warehouses and industrial sites that need to keep critical access points permanently free of stored items, tools or temporary equipment.

For general guidance on how workplaces in Australia are expected to manage safety signage and clear-access requirements, see Safe Work Australia. Fitting a do not obstruct sign at every fire door, escape hatch and equipment access point is a low-cost step that gives supervisors an easy visual check during rounds, and gives inspectors clear evidence that a known housekeeping risk has been addressed with recognised prohibition signage.

Housekeeping audits and pre-departure checks should include a walk past every do not obstruct sign aboard to confirm the protected area is actually clear, since a sign alone cannot prevent an obstruction if crew have become used to treating the space as convenient storage. Reinforcing the message during safety meetings, alongside visible enforcement when an obstruction is found, keeps this simple prohibition effective over the long working life of a vessel.

Because this pictogram is not tied to a single IMPA or ISSA catalogue entry, it can be produced in a range of sizes and mounted on floors, bulkheads or overhead beams to suit whatever access point it is protecting, from a narrow alleyway to a wide warehouse loading bay. Fleet operators often order a mixed batch covering fire doors, switchrooms and stairwell landings in one purchase, standardising the same clear-access warning across every vessel and shore facility they manage rather than sourcing ad hoc signage from multiple suppliers over time.

Browse our full range of prohibition signs for more IMO-compliant maritime safety signage.