Brunswick 750 IMPACT, Operation & Maintenance Manual

Page: 137 / 156

7-1
Collar Maintenance Section 7
General Description
A commercial-grade, air or air-over-foam collar system
is an integral part of your boat’s design. The collar is
approximately 22 inches (56 cm) in diameter and
extends from just behind the transom to the bow.
This collar system gives you a performance advantage
over conventional FRP boats of the same length due
to a significant reduction in boat weight. The collar
system also improves maneuvering and stability in
rough seas and makes boarding operations less com-
plicated.
Your collar system might include:
• Seven separate inflation chambers
• Seven inflation valves
• Seven over-pressure valves
• Painted-on non-slip surfaces
• Full-length interior and exterior hand lines
• One full-length, rubbing strake
• Military boarding chafe system (MBCS)
• Six handles
• One boarding platform with swimmer’s ladder
The collar system is manufactured using 40-ounce
polyurethane fabric. The polyurethane fabric has out-
standing UV stability and superior resistance to tearing
and puncturing.
The collar system is assembled using a proprietary,
high-frequency thermo-welding process. This process
creates a joint at the seams that is actually stronger
than the surrounding material.