286 / 308
286
toll free 800.307.6702 MASTERVOLT | mastervolt.com MARINCO | marinco.com ANCOR | ancorproducts.com
B
C
A
To Specifically Calculate Your Boat’s Air Volume,
Use This Simple Formula:
A x B x C x 70% = Boat Interior Volume
A Dimension is the interior length (excluding cockpit)
B Dimension is the boat width
C Dimension is the average interior height
How Solar Vents Work
Maintenance Ventilation
In most climates, boats that have been closed for a period of
time will become “stuffy.” The temperature differential that
develops between the boat cabin and the outdoor environment
will cause the humidity level inside the boat cabin to rise. When
the humidity level in the closed cabin rises, moisture forms,
resulting in mold, mildew and musty air. In these conditions,
fabrics, boat electronics and even the boat’s fiberglass
structure can be damaged. By consistently replacing trapped,
stale air in the closed boat with fresh outside air, the humidity
equalizes from inside to outside, resulting in effective
maintenance ventilation.
Comfort Ventilation
Combining different types of vents, with one vent providing
“intake” air flow while another vent provides “exhaust” air flow,
creates cross-flow ventilation. A cross-flow ventilation system
will make the interior cabin more comfortable and pleasurable
because air is constantly moving throughout the cabin. No
matter what your boat size or cabin configuration is, you can
increase your boating enjoyment with the addition of ventilation.
Safety Ventilation
Most boaters are unaware of the hazards that exist in the
boating environment. Any number of serious ventilation
problems can occur when a boat is left unattended. And even if
you are underway, these problems don’t go away. Fumes and
gasses, ranging from carbon monoxide to hydrogen gas from
battery charging, to gasoline, propane or solvents stored below,
are unpleasant, and can sometimes be dangerous. Also, any
open flame devices in the cabin require proper ventilation.
Ventilation helps to eliminate these hazards by providing
constant air circulation resulting in effective safety ventilation.
How Much Ventilation Is Required For Your Boat?
Ideally, the air in the interior of a boat should be circulated once
every hour. A typical 30-foot boat contains approximately 800
cubic feet of air. As you will see, our solar powered models can
move between 600 and 1,000 cubic feet of air every hour. The
general guidelines for providing maintenance ventilation are
as follows:
Boat Size
Recommended Ventilation
Up to 24 ft.
1 Exhaust Vent*
24 to 40 ft.
1 Exhaust Vent & 1 Intake Vent
40 ft. and larger 2 Exhaust Vents & 1 Intake Vent
* For effective maintenance ventilation, one vent assumes there
will be access for air to get into the cabin (i.e., cowl vent,
clamshell vent or louvered panel)
It is important to evaluate the cabin layout of your boat to
determine optimal locations for both intake and exhaust
ventilation. These illustrations suggest placement for Marinco
™
solar powered vents and Marinco
™
passive vents.
Note how the placement of the vents creates cross
flow ventilation.
Accessories:
Ventilation Basics