Applications — Cruise & Marine

This page walks a vessel from the galley to the technical spaces and sets out where generated solution is used, how it is applied and what is recorded. Set points are described as decisions rather than numbers, because the right strength depends on the surface, the soil and your own verification data — and because water-system figures belong to the current VSP Standards rather than to a supplier page.

Galleys, pantries and provisioning

A ship’s galley operation runs continuously and cannot stop. The sequence is the ordinary food-safety one, executed in less space and with more people than ashore: remove soil mechanically, wash with detergent, rinse, sanitise at the SOP set point, drain or air dry.

• Through service: benches, boards, handles, tool and glove stations, hand-contact surfaces at changeovers.
• Equipment: slicers, mixers, processors and holding equipment on a strip-down schedule — the complex geometry is where problems live.
• Walk-ins and cold stores: shelving, handles, floors, condensate points, on a weekly cycle.
• Provisioning: crates, totes and trolleys through a wash and sanitise route rather than a rinse, since they come aboard from everywhere.
• Produce: handled under the authorisation that applies to the use; the limits are on the regulations page and differ from surface limits.

Research relevant to these surfaces includes neutral electrolysed water for sanitising cutting boards and neutral electrolysed water on stainless steel, cited as research.

Buffets and service lines

The buffet is the highest-contact food environment on the ship: hundreds of hands on shared tongs, rails and dispensers within a short service window. During an AGE event it is also the first thing modified — crew service instead of self-service, single-use items, or closure.

The routine that works is frequency-based rather than event-based: a defined wipe cycle through service on tongs, rails, sneeze-guard edges, condiment stations and tray returns, with a full clean at changeover. Solution needs to be at the station; a trolley that has to be fetched is a cycle that gets skipped.

Public areas and high-touch surfaces

This is where an outbreak is actually fought. Handrails, lift buttons and doors, gangway touchpoints, casino and bar surfaces, theatre armrests, kids’ club equipment, gym equipment, table surfaces.

Public toilets and vomiting incidents

Public toilets get the highest routine frequency on the ship, and during an event they get more. The parts that matter are touchpoints — door handles, locks, taps, flush controls, dispensers — alongside floors and the areas immediately around fixtures.

Vomiting incidents in any public space need a written procedure rather than improvisation: cordon the area generously, since aerosolised contamination spreads well beyond the visible spot; PPE for the responder; absorb and remove; clean; then sanitise with adequate contact time; dispose of materials as the procedure directs; record the incident. The record matters — incident logs are part of how a pattern is spotted early.

Cabins, crew accommodation and isolation

Cabins are cleaned at turnaround and serviced daily, and the touchpoints are the same small set every time: door handles, light switches, remotes, phones, safe keypads, wardrobe handles, bathroom fixtures, balcony doors.

Isolation cabins carry an enhanced protocol: dedicated equipment, defined PPE, cleaning sequence and waste handling, and terminal cleaning before the cabin returns to use. Crew accommodation deserves the same discipline as passenger cabins and often gets less — crew cabins, messes and alleyways sustain outbreaks after passenger numbers fall, which is a well-known pattern and an avoidable one.

Medical centre and waste

The medical centre works to the ship’s clinical procedures, and where those specify a registered disinfectant, that is what is used — HOCl-AS200 per its label, or whatever the protocol names. Clinical waste, laundry from isolation cabins and cleaning equipment used in isolation all follow defined handling routes. This is not the area to improvise with a generated solution because it happens to be on tap.

Laundry, stores and technical spaces

Laundry handles everything the ship touches and is worth including explicitly: sorting areas, trolleys, chutes and the surfaces around them. Stores, garbage and waste-handling rooms, provision lifts and their control surfaces belong on the environmental schedule. In these spaces the constraint is almost never chemistry; it is whether a draw point exists nearby.

What is not on this list

Potable water systems, pools, whirlpool spas and decorative water features are managed as plant, under the ship’s water-management plan and the current VSP Standards, with their own monitoring and sampling regimes. They are deliberately absent from the housekeeping and galley programme above, because treating them as a cleaning task is how ships get into trouble. Ballast water is a separate subject again, under the IMO convention and type-approved treatment systems.

Fogging, and where it fits

Fogging is used on some vessels for environmental work between occupancies — a cabin turnaround after an isolation case, or a public space overnight. It is an addition to cleaning, never a substitute, and it needs occupancy control, ventilation planning and a written procedure. The hub holds research on fog-based application against human norovirus, liquid and fog application against human norovirus on surfaces, and an inhalation assessment of a hypochlorous acid fog, inhalation assessment of a hypochlorous acid fog; both are research rather than a recommendation, and any fogging programme should be built with your own risk assessment and the relevant product’s directions.

Turnaround, and the terminal clean

Turnaround is the tightest window on the ship and the most consequential cleaning event in the schedule. Everything the previous voyage generated has to be resolved before the next complement boards, in a few hours, while embarkation is already running.

Three things make it work. A written sequence per cabin type, so the routine does not depend on who is doing it. Enough draw points that trolleys are restocked on the accommodation decks rather than from a central store. And a defined terminal-clean protocol for cabins that held isolation cases, with dedicated equipment, a longer sequence and a record — kept separate from the standard turnaround so it cannot quietly be skipped under time pressure.

After an AGE event, the terminal clean extends beyond cabins: public toilets, high-touch circulation routes, crew accommodation and the buffet all carry over risk into the next sailing. Plan the escalated turnaround in advance, because the decision has to be made in the hours before embarkation, not debated then.

Two details repay attention. Cleaning equipment itself moves contamination between cabins if cloths and mop heads are not changed on a defined cycle rather than when they look dirty, so specify the cycle in the procedure. And trolleys returning to a central store at the end of turnaround should be emptied, cleaned and restocked as part of the sequence rather than at the start of the next one — otherwise the first cabins of the new voyage are cleaned with the last voyage’s equipment, which is precisely the carry-over the terminal clean exists to prevent.

Frequently asked questions