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BUOYANCY MECHANISM - Pressure
Thus, it is important to anticipate:
Check and adjust the pressure in the inflatable compartments (re-inflating or deflating
as necessary) according to temperature variations (especially when the temperature
varies greatly between the morning and evening in hot climates) and ensure that the
pressure is within the recommended pressure zone (from 220 to 270 mb/green zone).
RISK OF UNDERPRESSURE:
EXAMPLE: Your boat is exposed on a beach in the sun (temperature=50 °C) at the
recommended pressure (240 mb/3.4 PSI). When you launch it (temperature=20 °C), the
temperature and internal pressure of the inflatable compartments will drop simultaneously (up
to 120 mb) and YOU WILL THEN NEED TO REFLATE until you regain the millibars
lost due to the difference between the ambient air and water temperatures. A drop in pressure
at the end of the day, when the outside temperature is dropping, is normal.
RISK OF OVERPRESSURE
EXAMPLE: Your boat is inflated to its recommended pressure (240 mb/3.4 PSI) at
the beginning or end of the day (low outside temperature = 10 °C). Later in the day, your boat
is exposed in the sun on the beach or on a yacht deck (temperature = 50 °C). The temperature
inside the inflatable compartments may rise to 70 °C (particularly for dark buoyancy
mechanisms), doubling the initial pressure (480 mb). YOU WILL THEN NEED TO
DEFLATE the boat to return to the recommended pressure.
IF YOUR BOAT IS OVERINFLATED, THERE WILL BE UNDUE
PRESSURE ON THE INFLATABLE STRUCTURE THAT MAY
CAUTION
RUPTURE IT.
IN CASE OF OVERPRESSURE
"EASY-PUSH" VALVE
Release some air by pressing
the valve knob.
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