Classes of deck officer certificates
5.—(1)  The following classes of deck officer certificates of competency are to be issued in accordance with these Regulations:
(a)Certificate of Competency (Deck Officer) Class 1 (Master Mariner);
(b)Certificate of Competency (Deck Officer) Class 2;
(c)Certificate of Competency (Deck Officer) Class 3;
(d)Certificate of Competency (Deck Officer) Class 4 (Home-Trade Master);
(e)Certificate of Competency (Deck Officer) Class 5; and
(f)Certificate of Competency (Deck Officer) Class 6.
(2)  Subject to paragraph (3), a certificate of competency of a class set out in paragraph (1) is to be treated as being a certificate of a class higher than a certificate of any class that is set out after it in that paragraph.
(3)  Notwithstanding paragraph (2), a Class 2 or a Class 3 Certificate of Competency or its equivalent is not to be treated as being higher than, or equal to, a Class 4 Certificate of Competency or its equivalent for the purposes of the manning of home-trade ships.
(4)  A person who is not a qualified deck officer shall not take charge of a navigational or deck watch.