Regulation 13 Prohibition on proceeding to sea without certificate
(1)
No United Kingdom fishing vessel shall proceed to sea without a valid certificate referred to in regulation 10 above.
(2)
The skipper of any United Kingdom fishing vessel shall on demand produce to any officer of customs and excise or of the Secretary of State or to any British sea-fishery officer any certificate required by these Regulations; and the fishing vessel may be detained until the certificate is so produced.