The lifesaving appliance A type davit is a special equipment used
on board for launching and recovering the fast rescue boat. The
davit is provied with wave compensation unit, which meet with
requirement for use on board of the vessels.
The davit is manufactured and test under the approval of
Classification Society such as CCS, BV, ABS, DNV-GL, LR, RMRS, EC,
MED, IRS in
compliance with the lasten requirements of SOLAS & MSC.81(70).
This boat davit is a davit whose turning out is driven by
hydraulic, then lower. In case of emergency, the accumulator
may be used for turning out the boat davit, then lower rescue
boat with high speed depending on its gravity by remote control
In case of failure of power, the manual pump may be used for
supplying hydraulic driving to ensure the boat davit to be
able to turn out to lower rescue boat
Working load for this boat davit is the weight of fully laden boat
with full complement person, under this load, the boat davit
may turn out , lower and hoist
A buffering unit which can reduce the force to 50% during boat
hoisting and lowing is installed in the brake in order to
protect the boat and its capacities from damage. The brake
with such buffering unit is available to stop the boat at
any moment, even during boat lowing with the speed of 1m/s.
The rescue boat will be fluctuated by the wave when it is in water
and the tensile force on the steel wire will be inconstant as
above condition. A wave compensation unit mounted on this
launching appliance is used to keep the tensile force constant
so as to make the rescue boat stable when it is in the water. This
wave compensation unit can be activated as the boat is lowed
to the water surface and function until the rescue boat is
released from the hook. During recovery, the wave compensation
unit can be started to keep constant tensile force on the
steel wire and make the boat stable when the rescue boat is
fastened with the hook.(Presently, the rescue boat is
fluctuating with the wave) The operator should stop the wave
compensation unit and start the winch with the max. power when
the boat is at the peak of the wave. With this wave
compensation unit , this launching appliance can meet
relevant requirements even though the vessel, launching
appliance are downing and the rescue boat is uping with the
wave at the max. speed.
There is an anti-swing device on the davit. It can ensure the
rescue boat the relative verticality of the water surface
during turning out and turning in in order to avoiding any
damage to both the boat operators which caused by swinging boat.
