Regal 3300 Owner's Manual page 172

CHAPTER 6
Docking Lights
If equipped, docking lights are integrated into the hull. They are very
useful for night docking and maneuvering. To operate turn on the helm
switch marked "docking lights".
It is recommended not to use the docking lights while navigating in
open water at night since the illumination could cause a glare on the
bow navigation light possibly causing visibility problems. There is a
dedicated "docking light" switch near the helm.
Typical Docking Lights
Gas Vapor Detector
If equipped, a gas vapor detector is a state of the art fume monitoring
and alarm system. It is a highly effective detector of engine compartment
gasoline fumes from unburned hydrocarbons emitted from faulty
exhaust systems and hydrogen battery vapors.
The unit operates with a head unit at the helm, a sensor located in the
bilge installed just above the normal accumulation of oily bilge water.
A .5 amp buss fuse (for overcurrent protection) is located behind the
helm head unit.
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