Raymarine e7 Manual page 79

TH Series Thermal Marine Scopes
• The Thermal Marine Scopes
make pictures from heat,
not light, to help you see
clearly in all light conditions
from daylight to complete
darkness.
• Thermal night vision
improves your ability to see
rocks, buoys, floating
debris, and even helps you
find people in the water
when just a few minutes
can mean the difference
between life and death.