The key concept is 'self-sufficiency'.  There is ample support to for reasonable use (nautically speaking) of electricity and water for up to five (5) people.

SCOLA has the capacity to generate adequate power using the wind-generator and the solar panels.  Although you can connect to shore power or use the diesel engines, these are efficient alternatives to wind and solar power.

Depending on your anchorage, SCOLA is able to make enough fresh water without having to buy fresh water from shore.  

Features List

Electricity
Six (6) solar panels for a total of 300 watts. Air-X wind generator and remote controller. One (1) 70-amp alternator on each of the two engines (I never used them for house battery charging) Shore supply 110-volt connector (I never used it, which is good for avoiding stray currents).
Xantrex 60-amp charge & load controller with remote display (2003) for care-free year-round management of all electricity sources. PROwatt 1500 12-volt power inverter to 110-volt. 50-amp battery charger Bank of six (6) house batteries (2007), equipped with PowerPulse; producing 345AH of 12-volts. Electrical panel for both 12-volt and 110-volt equipment, withclass A cabling
Water
PUR PowerSurvivor 80E water maker (3.5 gph), plus one spare membrane. Shore water supply connector (seldom use it). 100-Gallon aluminum water tank Pressure delivery of hot/cold fresh water to three taps and three showers, plus one spare pump.
LP Gas
One (1) 20-Gallon aluminum LP gas bottle in a vented tank.  It is stored in an outside locker under the helm station.  It is controlled by a remote shut-off valve.  There is an additional control tap for using the grill.