8.4.1 High bilge-water level in periodically unattended
machinery spaces below the assigned load line should activate an audible
and visual alarm at the locations required by 8.7.1.
8.4.2 Bilge wells should be provided, where practicable,
in periodically unattended machinery spaces and should be large enough
to accommodate easily the normal drainage during unattended periods.
They should be located and monitored in such a way that the accumulation
of liquids is detected at pre-set levels, at normal angles of inclination.
8.4.3 Where the bilge pumps are capable of being
started automatically, means should be provided to indicate at the
locations required by 8.7.1 when the
influx of liquid is greater than the pump capacity or when the pump
is operating more frequently than would normally be expected. In these
cases, smaller bilge wells to cover a reasonable period of time may
be permitted. Where automatically controlled bilge pumps are provided,
special attention should be given to oil pollution prevention requirements.