What is the best 12 V DC watermaker for fishing boats?

Schenker Zen 100 leads this shortlist at 4.0 watt-hours per litre: 1.6 hours and 640 Wh to make 160 litres. "Best" here means best on the numbers for this combination — the ordering is by what fishing boats optimise for, and it does not account for what your dealer can actually service.

How much 12 V DC power does a watermaker need on fishing boats?

For 160 litres a day, the leader here draws about 640 watt-hours, or roughly 53 amp-hours from a 12 V bank. The spread across this shortlist is wide: compare the Wh/L column rather than the wattage, because a thirstier system that runs for less time can still cost more energy overall.

Why are only 6 systems listed?

Because two filters are applied, not one. 25 systems in our table suit fishing boats on output and configuration; 6 of those run on 12 V DC. The remaining 19 are on the full fishing boats shortlist and are worth a look if your electrical setup is not fixed.

12 V DC · fishing boats

12 V DC watermakers for fishing boats.

Two constraints at once: fishing boats typically need about 160 litres a day, and a 12 V DC system has to make them inside what that electrical setup can deliver. These are the 6 systems that satisfy both.

Systems that fit both6of 25 that suit fishing boats

Daily need160 L4 aboard at 40 L each

Leader hereSchenker Zen 1001.6 h and 640 Wh for 160 L

Why 12 V DC. Runs straight off a 12 V house bank with no inverter and no generator. Output is modest by design, so the question is whether your daily litres fit inside a sensible run time. On fishing boats: Most working boats have generator capacity or a large alternator, so the kilowatt-class systems are viable and give the best output per dollar.

12 V DC systems for fishing boats

Ordered by what fishing boats optimise for. Run time and energy below are for 160 litres a day.

System	Power	Output L/hr	Draw W	Wh per litre	Price
Zen 150 Schenker · spec unconfirmed	12/24/48V DC or AC	150	—	not published	on request
Zen 100 Schenker	12/24/48V DC or AC	100	400	4.0	$9,600
D100 DUO Dessalatorreported	12/24V DC	100	700	7.0	on request
Newport 400C Spectra	12/24/48V DC	64	288	4.5	$14,500
D60 Freedom Dessalatorreported	12/24V DC	60	550	9.2	on request
D60 DUO Dessalatorreported	12/24V DC	60	550	9.2	on request

Under 6 Wh/L · energy recovery

6–12 Wh/L

Over 12 Wh/L

19 further systems suit fishing boats but do not run on 12 V DC — see the full shortlist.

Check it against your own bank

160 litres a day is a planning figure. Put in your crew, your battery bank and your real solar surplus and see which of these still fit.

Open the calculator

Common questions

What is the best 12 V DC watermaker for fishing boats?: Schenker Zen 100 leads this shortlist at 4.0 watt-hours per litre: 1.6 hours and 640 Wh to make 160 litres. "Best" here means best on the numbers for this combination — the ordering is by what fishing boats optimise for, and it does not account for what your dealer can actually service.
How much 12 V DC power does a watermaker need on fishing boats?: For 160 litres a day, the leader here draws about 640 watt-hours, or roughly 53 amp-hours from a 12 V bank. The spread across this shortlist is wide: compare the Wh/L column rather than the wattage, because a thirstier system that runs for less time can still cost more energy overall.
Why are only 6 systems listed?: Because two filters are applied, not one. 25 systems in our table suit fishing boats on output and configuration; 6 of those run on 12 V DC. The remaining 19 are on the full fishing boats shortlist and are worth a look if your electrical setup is not fixed.

Same boat, other power

Change one constraint

Everything for fishing boats →

All 12 V DC systems Other boat types

How this shortlist is built. 160 litres a day is 4 aboard at 40 litres each — a planning figure for this kind of boat, not a measurement of yours. From the systems that suit fishing boats, this page keeps only those the manufacturer rates for 12 V DC. Watt-hours per litre is rated draw divided by rated output. Methodology.