Chapter XI-1: Special measures to enhance maritime safety
Regulation 3
Regulation 1
Authorization of recognized organizations*
Organizations referred to in regulation 1/6 shall comply with the guidelines adopted by the Organization by
resolution A.739(18), as may be amended by the Organization, and the specifications adopted by the
Organization by resolution A.789(19), as may be amended by the Organization, provided that such
amendments are adopted, brought into force and take effect in accordance with the provisions of article
VIII of the present Convention concerning the amendment procedures applicable to the annex other than
chapter I.
Regulation 2
Enhanced surveys^
Bulk carriers as defined in regulation IX/1.6 and oil tankers as defined in regulation II-1/2.22 shall be
subject to an enhanced programme of inspections in accordance with the guidelines adopted by the
Assembly of the Organization by resolution A.744(18), as may be amended by the Organization, provided
that such amendments are adopted, brought into force and take effect in accordance with the provisions of
article VIII of the present Convention concerning the amendment procedures applicable to the annex other
than chapter I.
Regulation 3
Ship identification number
(Paragraphs 4 and 5 apply to all ships to which this regulation applies. For ships constructed before 1 July
2004, the requirements of paragraphs 4 and 5 shall be complied with not later than the first scheduled dry-
docking of the ship after 1 July 2004)
1 This regulation applies to all passenger ships of 100 gross tonnage and upwards and to all cargo ships of
300 gross tonnage and upwards.
2 Every ship shall be provided with an identification number which conforms to the IMO ship
identification number scheme adopted by the Organization.*
3 The ship's identification number shall be inserted** on the certificates and certified copies thereof
issued under regulation 1/12 or regulation 1/13.
4 The ship's identification number shall be permanently marked:
.1 in a visible place either on the stern of the ship or on either side of the hull, amidships port and
starboard, above the deepest assigned load line or either side of the superstructure, port and
starboard or on the front of the superstructure or, in the case of passenger ships, on a horizontal
surface visible from the air; and
.2 in an easily accessible place either on one of the end transverse bulkheads of the machinery
spaces, as defined in regulation II-2/3.30, or on one of the hatchways or, in the case of tankers, in
the pump-room or, in the case of ships with ro—ro spaces, as defined in regulation II-2/3.41, on
one of the end transverse bulkheads of the ro—ro spaces.
5.1 The permanent marking shall be plainly visible, clear of any other markings on the hull and shall be
painted in a contrasting colour.
* Refer to MSC-MEPC.5/Circ.2 on Guidelines for Administrations to ensure the adequacy of transfer of class-related matters
between recognized organizations (ROs).
+
Refer to MSC/Circ.655 on Guidance for planning the enhanced programme of inspections during surveys of bulk carriers and oil
tankers and MSC/Circ.686, Guidelines on the means of access to structures for inspection and maintenance of oil tankers and bulk
carriers.
* Refer to the IMO ship identification number scheme adopted by the Organization by resolution A.600(15).
§
Refer to MSC/Circ.l 142 - MEPC/Circ.425 on Marking the ship's plans, manuals and other documents with the IMO ship
identification number.
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