Regal 3300 Owner's Manual page 181

Features
Windshield
BRACES
OPENING
CENTER
WINDSHIELD
The typical windshield features tempered marine safety glass. The unit
is tinted and gasketed to deflect water. The windshield is supported
by a port and starboard brace. Periodically check the brace hardware
for tightness.
The center windshield opens for bow access. When vessel is in motion
ensure that both windshield latches (located at the center windshield
track opposite the hinged side) are in the locked mode. Never leave the
center windshield open when the vessel is in motion as personal
injury and/or property damage may occur.
When cleaning the glass do not use products with ammonia as it
causes corrosion and can damage the metal extrusion finish. Keep the
windshield clean for optimum operator visibility.
https://www.boat-manuals.com/
6-21