For the purpose of this Chapter the following terms shall have the meanings defined below. All other terms which are used in this Chapter and which are also defined in the Radio Regulations shall have the same meanings as defined in those Regulations:
| (a) | “Radio Regulations” means the Radio Regulations annexed to, or regarded as being annexed to, the most recent International Telecommunication Convention which may be in force at any time. |
| (b) | “Radiotelegraph auto alarm” means an automatic alarm receiving apparatus which responds to the radiotelegraph alarm signal and has been approved. |
| (c) | “Radiotelephone auto alarm” means an automatic alarm receiving apparatus which responds to the radiotelephone alarm signal and has been approved. |
| (d) | “Radiotelephone station”, “Radiotelephone installation” and “Watches-radiotelephone” shall be considered as relating to the medium frequency band, unless expressly provided otherwise. |
| (e) | “Radio Officer” means a person holding at least a first or second class radiotelegraph operator’s certificate, or a radiocommunication operator’s general certificate for the maritime mobile service, complying with the provisions of the Radio Regulations, who is employed in the radiotelegraph station of a ship which is provided with such a station in compliance with the provisions of Regulation 3 or Regulation 4 of this Chapter. |
| (f) | “Radiotelephone operator” means a person holding an appropriate certificate complying with the provisions of the Radio Regulations. |
| (g) | “Existing installation” means— |
| (i) | an installation wholly installed on board a ship before the date on which the present Convention enters into force irrespective of the date on which acceptance by the respective Administration takes effect; and |
| (ii) | an installation part of which was installed on board a ship before the date of entry into force of the present Convention and the rest of which consists either of parts installed in replacement of identical parts, or parts which comply with the requirements of this Chapter. |
| (h) | “New installation” means any installation which is not an existing installation. |
