Furuno WV-100, Operator'S Manual

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1. OPERATIONAL OVERVIEW
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1.2.1 Wave spectrum display area
The 2D analyzed wave spectrum is displayed on the left side of the screen.
• Wave period: The wave periods, or time between waves, appear in the wave spectrum display
area as dashed circles and numerical values (numerical positions are fixed). The wave period
is 15 seconds, 10 seconds, 5 seconds in order of increasing distance to own ship. The farther
away from own ship, the shorter the waves (wind waves), the closer to own ship, the longer the
waves (swells). The periods displayed on the screen are not proportionally displayed due to fre-
quency being used as a distance substitute.
• Wind waves: Waves generated by the wind blowing on the sea.
• Swells: Waves that remain after the waves developed by the wind disappears, or waves that
are detected from a distance and attenuate as they approach.
• Bearing line: The 360° azimuth is divided into 16 with solid lines at 22.5° intervals to make the
waves’ approach easier to understand.
• Wave spectrum: The color of the wave spectrum indicates the relative intensity of the wave on
the wave spectrum display. The intensity of the wave increases in order of dark blue, light blue,
light green, dark green, orange, yellow, red.
• Own ship icon: The own ship icon is displayed at the center of the screen.
Own ship icon
Wind speed
Wind direction
Speed over ground
Course over
ground
Heading
Wave periods displayed
in dashed circles
Wave periods displayed
as numerical values
Wave spectrum
Bearing lines displayed
in 16 solid lines