Ship Universe Maritime Tool
Cruise Ship Freshwater Production & Desalination Cost Tool
Estimate hotel-water demand, onboard desalination production, shore-water purchases, storage reserve, energy use and cost per cubic meter. Advanced mode separates reverse osmosis and evaporator production, sea and port utilization, fixed service cost and investment payback versus an all-bunkered-water baseline.
Passengers, Crew & Voyage
Simple mode combines all onboard desalination into one production system.
passengers
crew
L/person/day
m³/day
days
days demand
m³
m³
Desalination Production
m³/day
%
kWh/m³
$
/kWh
$
/m³ produced
Shore Water, Service Cost & Investment
$
/m³
$
$
/year
voyages/year
$
Used for simple payback versus an all-shore-water baseline.
Hotel Water Demand
Advanced mode separates passenger, crew and fixed hotel loads and models different production utilization at sea and in port.
passengers
crew
L/pax/day
L/crew/day
m³/day
m³/day
days
days
days demand
m³
m³
Reverse Osmosis System
m³/day
%
%
kWh/m³
$
/kWh
$
/m³
Evaporator / Waste-Heat Freshwater Generator
m³/day
%
%
$
/m³
Use incremental fuel, steam, pumping or waste-heat opportunity cost.
$
/m³
Shore Water, Fixed Cost & Investment
$
/m³
$
$
/year
voyages/year
$
$
$
Freshwater & Desalination Results
Simple freshwater production estimate
Enter ship data
Enter passengers, voyage duration and desalination assumptions
to estimate water demand, onboard production and freshwater cost.
Planning estimate only.
Actual freshwater demand and production depend on passenger
occupancy, laundry and galley operations, pools and spa loads,
potable-water practices, seawater temperature and salinity,
membrane condition, evaporator heat availability, port
restrictions, tank arrangement, treatment chemistry,
potable-water quality requirements and equipment availability.
This tool does not size pumps, membranes, evaporators or
potable-water tanks for engineering approval.
Results copied