Davit column
The davit column is an assembly of an inner column, an outer column and a self-braking worm gear unit which is driven by an axial piston motor.
The self-braking properties of the worm gear guarantees that the davit is kept in position even under extreme list and trim conditions.
The SCH-R davit is delivered with a fixed inner column which should be flanged onto a counter foundation/pedestal.

Davit arm
The davit arm is a welded construction of a hollow section, a pipe, steel plates and a flange and provided with all relevant accessories such as winch foundation, top sheave and lifting eye.

Winch
Each davit will be supplied with an electric driven winch built onto the davit arm.
The winch is a standard item and consists of the following main components:
Closed gear casing;
Built-on electric motor;
Single winch drum with separate section for remote control wire;
Speed reducer gear (conventional gear train);
Centrifugal brake unit for gravity lowering;
Stop brake of the “dead-man” type;
Manual cranking gear with safety device.

Hydraulic power pack unit
The hydraulic power pack unit consists of the following main components:
Stainless steel hydraulic tank (AISI 316) with drain valve;
Hydraulic pump;
Electric motor;
Pressure switches;
Pressure relief valve;
Control valve;
Accumulator.

Accessories:

Each davit system will be supplied with the following accessories:

Electric controls
Motor starter built onto the davit arm and provided with main switch, push button and “power on” indicator;
Limit switch

Wire rope
Galvanised non-rotating steel wire rope provided with thimble at one end and of sufficient length for lowering the rescue boat into the water;

Remote control parts
Stainless steel remote control wires of sufficient length for both slewing and lowering;
Handgrips for operating from within the rescue boat;
Remote control sheaves;
Loose items such as wire rope clips and shackles;

Conservation
Unless agreed otherwise, all steelwork will be shot blasted to SA 2,5 and coated with one layer of 2-component epoxy primer of brand SIGMA. Dry film thickness 60-80 microns.
This conservation is not suitable for outdoor storage for a long period of time.

Optional accessories
The following accessories are to be seen as non-standard but can be supplied optionally:
Stainless steel automatic release hook (off-load type);
Counter foundation/Pedestal;
Cradle for rescue boat