106 
This flange, together with a gasket of oilproof material, shall be suitable for a 
service presure 6 kg/cm’. 
Regulation 20 
OIL RECORD BOOK 
(1) Every oil tanker of 150 tons gross tonnage and above and every ship of 
400 tons gross tonnage and above other than an oil tanker shall be provided 
with an Oil Record Book, whether as part of the ship’s official log book or other- 
wise, in the form specified in Appendix III to this Annex. 
(2) The Oil Record Book shall be completed on each occasion, on a tank-to- 
tank basis, whenever any of the following operations take place in the ship: 
(a) For oil tankers: 
(i) Loading of oil cargo; 
(ii) Internal transfer of oil cargo during voyage ; 
(iii) Opening or closing before and after loading and unloading operations 
of valves or similar devices which inter-connect cargo tanks; 
(iv) Opening or closing of means of communication between cargo piping 
and seawater ballast piping; 
(v) Opening or closing of ships’ side valves before, during and after oe 
and unloading operations; 
(vi) Unloading of oil cargo; 
(vii) Ballasting of cargo tanks; 
viii) Cleaning of cargo tanks; 
(ix) Discharge of ballast except from segregated ballast tanks; 
(x) Discharge of water from slop tanks; 
(xi) Disposal of residues; 
(xii) Discharge overboard of bilge water which has accumulated in machinery 
space whilst in port, and the routine discharge at sea of bilge water has ac- 
cumulated in machinery spaces. 
(b) For ships other than oil tankers: 
(i) Ballasting or cleaning of fuel oil tanks or oil cargo spaces ; 
(ii) discharge of ballast or cleaning water from tanks referred to under (i) 
of this sub-paragraph ; 
(iii) disposal of residues ; 
(iv) discharge overboard of bilge water which has accumulated in machinery 
spaces whilst in port, and the routine discharge at sea of bilge water which has 
accumulated in machinery spaces. 
(3) In the event of such discharge of oil or oily mixture as is referred to in 
Regulation 11 of this Annex or in the event of accidental or other exceptional 
discharge of oil not excepted by that Regulation, a statement shall be made in 
the Oil Record Book of the circumstances of, and the reasons for, the discharge. 
(4) Each operation described in paragraph (2) of this Regulation shall be fully 
recorded without delay in the Oil Record Book so that all the entries in the 
book appropriate to that operation are completed. Each section of the book shall 
be sigued by the officer or ofticers in charge of the operations concerned and shall 
be countersigned by the Master of the ship. The entries in the Oil Record Book 
shall be in an official language of the State whose flag the ship is entiiled to ily, 
and, for ships holding an International Oil Pollution Prevention Certificate, 
(1973) in English or French. The entries in an official national language of the 
State whose flag the ship is entitled to fly shall prevail in case of a dispute or 
discrepancy. 
(5) The Oil Reeord Book shall be kept in such a place as to be readily avail- 
able for inspection at all reasonable times’and, except in the case of mmmanned 
ships under tow, shall be kept on board the ship. It shall be preserved for a 
period of three years after the lust entry has been made. 
(7) The competent authority of the Government of a Party to the Convention 
may inspect the Oil Reeord Book on board any ship to which this Annex applies 
while the ship is in its port or offshore terminals and may make a copy of any 
entry in that book and may require the Master of the ship to certify that the 
copy is a true copy of such entry. Any copy so made which has heen certificd 
by the Master of the ship as a true copy of an entry in the ship’s Oil Record Book 
shall be made admissible in any judicial proceedings as evidence of the facts 
stated in the entry. The inspection of an Oil Record Book and the taking of a 
certified copy by the competent authority under this paragraph shall be per- 
formed as expeditiously as possible without causing the ship to be unduly 
delayed. 
