Appliances Are the Hardest Fit Problem on a Boat
Furniture you can disassemble. Mattresses roll. Appliances are sealed boxes that can't be shrunk, folded, or taken apart. A 27-inch washer has to come down the companionway at 27 inches — period. That's why most boat appliance upgrades start with a tape measure, not a shopping cart.
Before you buy anything, measure the entire dock-to-locker path: companionway, ladder, saloon, galley corner, and the locker cutout itself. If any one dimension is smaller than any appliance side, the appliance doesn't go in. See our dock-to-cabin delivery guide for the full path-measurement method.
Marine Fridges and Freezers
Top-Loading Boxes (Most Common)
Top-load fridges are built into cabinetry and accessed from above. They're rated by interior volume, but the external box is what matters for fit.
- 2.5 cu ft: 13 × 20 × 18" external — fits most 28+ ft cruisers
- 4 cu ft: 16 × 24 × 20" external — the standard liveaboard size
- 5–6 cu ft: 18 × 26 × 24" external — needs 35+ ft boat
- 8 cu ft: 22 × 30 × 28" external — yacht-only
Cooling is almost always DC (12V or 24V) with a separate compressor unit. Measure the locker opening and the path to it — a 20-inch-wide fridge won't go through an 18-inch galley corner.
Front-Loading Compact Fridges
More like a residential mini-fridge. 18–24" wide, 20–28" deep, 30–36" tall. Easier to install but harder to deliver because they're tall and rigid.
Drawer Fridges
Premium option on large motor yachts. 24" wide × 24" deep × 27" tall per drawer. Expensive, power-hungry, but they feel like a real kitchen.
Stoves and Cooktops
Propane Gimballed Stove (Traditional)
- 2-burner: 17 × 13 × 18" — fits in a 24+ ft galley
- 3-burner with oven: 22 × 19 × 20" — 32+ ft boat
Gimballed means the stove pivots to stay level while the boat heels — essential for cooking underway.
Induction Cooktop
- Single zone: 12 × 14 × 2" — drops into any counter cutout
- Dual zone: 23 × 14 × 2" — needs 30+ ft galley
Induction is the modern choice for liveaboards with lithium battery banks. No propane, no flame, no carbon monoxide risk — but your electrical system has to handle 1,800+ watts.
All-in-One Washer/Dryers
Combo ventless washer/dryers are the standard for liveaboard laundry. They wash, then dry in the same drum.
- Compact (24"): 23.5 × 22 × 33" — standard EU size; fits most 35+ ft boats
- Compact (18"): 17.7 × 22 × 27" — portable, sits on a counter; fits any boat
The 24" models have almost-residential capacity (2.5 cu ft). The 18" models handle 6–8 lbs per load — fine for two people if you run it every other day.
The ventless drying cycle takes 2–3 hours and uses a lot of power. Plan for shore power or a solid battery bank. Compare residential washer dimensions in our washer fit reference.
Water Heaters
- 6 gallon: 14 × 14 × 20" — typical
- 11 gallon: 16 × 16 × 24" — large cruiser / small yacht
- 20 gallon: 18 × 18 × 30" — full liveaboard
Most run dual-fuel: shore power element + engine heat exchanger loop. Install location is usually under a settee or in the engine room.
Dishwashers
Full-size dishwashers rarely fit on boats under 45 ft. Compact drawer dishwashers exist:
- Countertop compact: 17 × 20 × 17" — sits on a counter, holds 6 place settings
- 18" single drawer: 18 × 22 × 17" — built-in option for motor yachts
The Delivery Path for Heavy Appliances
A 24" washer/dryer weighs 150–200 lbs. A 4 cu ft fridge weighs 50–80 lbs. Moving these down a ladder requires at minimum two people and often a ramp or lowering strap system. Options for getting an appliance onto a boat:
- Companionway descent with two people — for items under 28" wide and under 100 lbs
- Deck hatch lift — remove the hatch and lower directly into the cabin with a line or davit
- Appliance dolly + ramp — for dock-to-cockpit only; do not wheel on non-skid
- Marina travel lift — lifts the appliance from the truck to the deck directly; best for 100+ lb items
Never attempt to carry a 200 lb washer down a ladder with one person. This is how both the washer and the person get hurt.
Measuring Before You Buy
- Measure the destination locker (interior: W × D × H, plus ventilation clearance)
- Measure the companionway clear opening with the hatch fully open
- Measure the ladder width and pitch angle
- Measure the galley approach width (the corner the appliance has to turn through once inside)
- Run all four numbers through the ItemFits calculator
The single tightest point on the path is your maximum appliance size. Don't buy the biggest fridge that fits the locker — buy the biggest fridge that fits the path to the locker.
FAQ
Can I put a residential fridge on a boat?
Technically yes on large yachts; practically no on anything under 45 ft. Residential fridges are too wide for most companionways, too power-hungry for typical battery banks, and not designed for heel angle or humidity.
Do I need a gimballed stove if I only cruise in calm water?
No. Dock-only and protected-water liveaboards often use fixed induction cooktops. Gimballed stoves are specifically for boats that cook while sailing in rough seas.
What's the biggest washer that fits a typical 40 ft cruiser?
A 24" EU-size combo washer/dryer (23.5" wide, 33" tall). Anything larger usually doesn't make it through the companionway. Plan delivery through the deck hatch if the companionway is under 24".
How much power does a marine all-in-one washer use?
1,800–2,400 watts during the dry cycle, for 2–3 hours. That's 4–7 kWh per load — meaningful for battery-powered boats. Many liveaboards run the washer only while on shore power.