In the case of ships the manning of which has to take account,
without discrimination, of the interests of crews having differing
and distinctive religious and social practices, the competent authority
may, after consultation with the organisations of shipowners and/or
the shipowners and with the bona fide trade unions of
the seafarers concerned, and provided that these two sides are in
agreement, permit variations in respect of the provisions of paragraphs
1 to 4 and paragraph 7 of Article 5 and
paragraphs 1 and 4 of Article 8 of
this Convention on condition that such variations do not result in
over-all facilities less favourable than those which would result
from the application of the provisions of the Convention. Particulars
of all such variations shall be communicated by the Member concerned
to the Director-General of the International Labour Office who shall
notify the Members of the International Labour Organisation.