Silver Marine Captain 360, Owner'S Manual

Page: 33 / 40

32
BUOYANCY TUBE - Pressure
RISK OF UNDER PRESSURE:
EXAMPLE: You have beached your boat and it is exposed to direct sunlight (temperature=50 C/122 F)
at the recommended pressure (0.25bar/3.6 PSI). When you launch the boat (temperature=21 C/70 F),
the internal temperature and pressure of inflatable compartments will simultaneously drop (down to 0.
163bar). YOU MUST RE-INFLATE YOUR BOAT to recover the pressure lost due to temperature differ-
ence between ambient air and water. A pressure drop at the end of the day, when the temperature drops,
is normal.
RISK OF OVER PRESSURE:
EXAMPLE: You boat is inflated at recommended pressure (0.25bar/3.6 PSI) at the beginning of the
day (low external temperature=10 C/50 F). Later in the day, your boat is lying on the beach or on the
deck of a yacht and exposed to direct sunlight (temperature=50 C/122 F). The internal temperature of
the inflatable compartments may increase to 70 C resulting in almost a doubling of the initial pressure
(0.43bar). YOU MUST NOW DEFLATE YOUR BOAT to return to the recommended pressure.
IN CASE OF OVER PRESSURE:
IF YOUR BOAT IS OVER INFLATED, THE PRESSURE EXERTS EXCES-
SIVE FORCE ONTO THE INFLATABLE STRUCTURE WHICH MAY CAUSE
THE ASSEMBLY TO RUPTURE.
RECESSED VALVE:
Release air by pressing the valve plunger