The centrifugal submersible bilge suction pumps, controlled by special floats, suck the water from the bilge and send it overboard. Another alarm activation float, placed higher than the first, activates the alarm siren.
The pumps are connected directly to the batteries and can therefore start even if the battery master switch is positioned to OFF, thus ensuring water drain at any time (keep the magneto-thermal breakers on the electrical panel to ON).
The suctions of the pumps are equipped with net strainers; their purpose is to prevent the penetration inside the circuit of foreign bodies, which may damage the pump or cause pipe clogging.
The bilge pumps can operate both in automatic mode, thanks to float switches and in manual mode.
To activate the pump manually it is necessary to activate the relevant buttons located on the synoptic panel in the helm station. To enable the running of the bilge pumps, switch on the relevant thermal breakers located on the main electrical panel of the engine room.
In case of emergency it is possible to extract the bilge water in the engine room through the sea pumps placed on each engine.
Keep the bilge dry to allow the detection of water and to reduce the risk of slipping, as well as creating a less aggressive environment for the fixtures.
Should the automatic bilge pumps of the engine room, as well as the auxiliary bilge pump not be able to drain the bilge water, the engine room is equipped with the bilge emergency draining system, operating by means of flywheel valves with manual activation, as a draining pump.
In case of emergency, use the handwheels of both valves, taking the valves to the emergency position; the suction of the pumps, driven by the engines, is diverted towards the bilge.
Should it be necessary to use this draining system, the bilge level must be checked continuously, because in case of complete drainage, the engines will not be cooled down.
Be careful to replace the valves to sea water suction position, when the water level in the engine room bilge is under control, so as not to impair the engine components.
A suction basket to collect accidental oil leakage is located under the engines and does not communicate with the bilge.
Sea discharge of oils and fuels is prohibited.
In case of water presence in some compartments of the lower deck, before getting alert, check if the bilge water is fresh or sea water, this will be of fundamental help with checking its source.
The bilges must be kept dry and clean.
Remove any rags or other residues from the bilge, to prevent any clogging of the pump intakes, causing serious damage to the pumps and impairing the safety of the yacht.
The system total capacity is not designed for yacht draining in case of a hull leaks.
Possible oil or fuel spilled in the bilge must be collected and stowed.
It is forbidden to discharge bilge water mixed with oil or diesel fuel into the sea, because this can cause pollution.
During the maintenance operation in the engine room, it is compulsory to disconnect the magneto-thermal breakers of the bilge pump automatic suction system, avoiding in this way accidental spillages of liquids and consequently sea water pollution.