which not only take in sunlight and store it in batteries, but also act as sails.
"We angle(调整角度) our solar panels to the sun in two planes(面), which increases the amount of energy we get from the sun by 40 percent," Dane says. "And also we can use that same structure to do another job, which is also the sail, and so these wing sails actually push the ferry forward just like a soft sail does."
Computers check the sun and wind and angle the solar wings to take in the most sunlight. If there isn't much wind or it is a cloudy day, energy stored in the batteries runs the electric motor for up to five hours.
"If the batteries are too low, then the computer turns the generator on so the boat is always able to meet a commercial schedule, or get from point A to point B no matter what," Dan explains.
Dane got his idea for the Solar Sailor from a book on insects. He was amazed how insects use their wings to collect solar energy to warm themselves.
"When I read that, I realized there was a good example in nature for what we were going to do, which was to use a solar wing to collect solar energy and also to sail," he says.
77. What is the Solar Sailor?
A. A sailor who is good at using solar energy.
B. An Australian inventor.
C. A ferry that uses solar and wind power.
D. A new type of generator designed by Dane.
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