Complete comfort on the water
You normally go sailing for a weekend or midweek, sometimes anchored without access
to shore power so you need enough power to cruise for two days. You also desire a
range of comforts onboard, including a large refrigerator, microwave/oven combination
and high-end coffee/espresso machine. Internet and email facilities are on your wish
list as is (partial) navigation using your laptop, a good sound system and occasionally
watching your favourite TV show.
NUMBER X POWER X TIME
Daily AC consumers (on inverter)
1000 W 1 x 1000 watt x 15 minutes
= 0.250 kWh
1 x 80 watt x 1 hour
= 0.080 kWh
1 x 30 watt x 1 hour
= 0.030 kWh
1 x 20 watt x 3 hours
= 0.060 kWh
Daily DC consumers
4 x 20 watt x 3 hours
= 0.240 kWh
50 W 1 x 10 watt* x 24 hours
= 0.240 kWh
1 x 20 watt x 8 hours
= 0.160 kWh
Total AC and DC consumers
= 1.060 kWh
* The refrigerator runs for 1/5 of the time, resulting in an average of 10 watt.
35-40 ft motoryacht
Longer weekend trips
Comfortable onboard facilities
Your navigation station includes a GPS, plotter, speedometer and depth gauge.
Your yacht has several pumps for water, shower, toilet and bilges.
You require optimum ease of operation; not only centrally located but also next
to your bed or in the engine room.