Dishwasher
Commercial dishwashers on board run the same rack-and-spray principle as ashore but add a stainless build against salt air, a fresh-water final rinse independent of any recirculated tank, and a duty cycle sized for a fixed crew sitting rather than a variable restaurant flow.
What to check on a Dishwasher.
12 models from MKN Marine in Dishwasher. Below: the full model list.
What sets a marine dishwasher apart
A galley dishwasher at sea does the same job as a commercial unit ashore, a wash cycle followed by a hot final rinse to sanitise crockery and cutlery, but it is built and operated differently. It has to survive continuous vibration and rolling motion without door seals working loose, its drain and supply connections are fixed piping rather than a floor gully, and it usually runs a known number of cycles per meal sitting for a fixed crew count rather than a variable commercial covers count. Many units are single-tank hood or rack types rather than the flight or conveyor machines found in shore catering, because galley space and crew numbers rarely justify anything larger.
Legend
- fresh-water final rinse
- dish rack
- upper spray arm
- detergent dispenser
- wash tank (sump)
- lower spray arm
- recirculation pump
- drain pump / valve
- heating element
Main components
Wash tank and pump
A recirculating pump draws detergent solution from the tank and sprays it through upper and lower rotating arms. Tank heating is usually electric, sometimes with a steam coil on vessels that already run a steam plant for the galley.
Final rinse system
A separate booster heater raises rinse water to 82-88 degrees C for the final sanitising rinse, drawn fresh each cycle rather than recirculated, which is what actually controls bacteria rather than the wash cycle itself.
Read the full guide
Door and seal arrangement
Hood-type machines lift by hand or motor; door-type machines seal with a gasket that is the single most common wear item on board due to constant thermal cycling and vibration loosening hinges over time.
Detergent and rinse-aid dosing
Peristaltic dosing pumps meter detergent and rinse aid per cycle; calibration drifts over months and is rarely checked unless wash results visibly deteriorate.
Selection and sizing
- Cycles per hour needed against crew size and meal sitting length; a 90-second to 2-minute cycle machine copes with most crew complements under 40.
- Fresh water and electrical supply available, since the booster heater alone can draw several kilowatts.
- Rack size against the vessel's crockery and galley tray standard.
- Corrosion-resistant grade of stainless steel for the tank and frame, given the humid, salty galley atmosphere.
Typical faults
| Fault | Cause | Consequence |
|---|---|---|
| Cloudy or spotted glassware | Rinse-aid dosing pump empty or miscalibrated | Fails visual hygiene check, crew complaints |
| Poor wash results | Blocked spray arm jets from food debris | Items returned for rewash, extra water and power use |
| Rinse temperature not reached | Scaled booster heater element | Sanitising rinse below target, hygiene risk |
| Door seal leak | Gasket hardened or hinge misaligned from vibration | Water on galley deck, slip hazard |
What to look for in a supplier
- Spare gaskets, spray arms and heating elements held as standard stock rather than made to order.
- A booster heater with a descaling routine suited to the feed water quality expected on board, since RO permeate and shore water differ in hardness.
- A control panel that survives galley humidity; a sealed membrane keypad outlasts an unsealed switch by a wide margin.
Descale the booster heater on a fixed calendar rather than waiting for the rinse temperature alarm; by the time the alarm trips, scale has usually already cut heater life and the sanitising rinse has been under-temperature for weeks.
Models in this type.
The best-documented model of each manufacturer first, then the next — 12 of 12 models in Dishwasher. Every row links to full specifications, documents and service notes.
Manufacturers.
All 8 manufacturers with models of Dishwasher. Names with a manufacturer page open it; the others open a search across the full library.
All manufacturers in the libraryAlso in Galley & Domestic.
The other equipment types in this category.
Write to us about this model — the answer comes by e-mail.
Name the make and the model and what the job is: a spare, a service call, a second opinion on a data sheet. We answer by e-mail.
No details at hand? A photo of the rating plate or the part is enough — simply attach it to the request.
Questions that come up with this equipment.
Is Dishwasher data free?
Yes. Every model page, every guide and every datasheet for this type is readable without an account. An account adds saved searches and requests, nothing is taken away.
My model is missing — what now?
Send us the nameplate. We identify it by hand, add it to the library, and if you need a part or a service, the request is already on our desk.
Can you source a Dishwasher part?
Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.