Regal 3300 Owner's Manual page 170

CHAPTER 6
Be sure to read and understand the following information
before using the battery charger system to avoid death or
serious injury from fire, explosion or electrical shock:
• Always connect the battery charger with an approved 14-gauge
grounded extension cord to a GFCI-protected AC outlet.
• Always connect the extension cord to the boat's 15-amp
receptacle plug before connecting to the GFCI-protected AC
outlet.
• Always make connection in an open atmosphere free of
explosive fumes.
• Always make cord connections securely with strain relief and
avoid any cord-water contact.
Depth Finder/Sounder
6-10
!
WARNING
In theory the depth finder picks up a bottom
signal sent through a transducer to the helm
gauge unit which is converted to readings in
feet, meters, or fathoms and displayed on
the gauge. The unit features shallow or deep
water alarms, both of the audio and visual
type, and keel offset.
https://www.boat-manuals.com/