4.8.1 Units should be provided with an efficient
bilge pumping plant capable of pumping from and draining any watertight
compartment under all practical conditions whether the unit is upright
or listed. Wing suctions should be provided if necessary for that
purpose. If the Administration is satisfied that the safety of the
unit is not impaired, the bilge pumping arrangements may be dispensed
with in particular compartments.
4.8.2 Units should have at least two power pumps
connected to the bilge main.