1 Every ship of 400 gross tonnage and above shall be provided with a
tank or tanks of adequate capacity, having regard to the type of machinery
and length of voyage, to receive the oil residues (sludge) which cannot be
dealt with otherwise in accordance with the requirements of this Annex,
such as those resulting from the purification of fuel and lubricating oils and
oil leakages in the machinery spaces.
2 Piping to and from sludge tanks shall have no direct connection
overboard, other than the standard discharge connection referred to in
3 In ships delivered after 31 December 1979, as defined in regulation
1.28.2, tanks for oil residues shall be designed and constructed so as to
facilitate their cleaning and the discharge of residues to reception facilities.
Ships delivered on or before 31 December 1979, as defined in regulation
1.28.1, shall comply with this requirement as far as is reasonable and