60Certificates to be produced to Customs by ships not registered in United Kingdom.
The master of every load line ship, other than a British ship registered in the United Kingdom or a Load Line Convention ship not registered in the United Kingdom, shall produce to the officer of Customs, from whom a clearance or transire for the ship from any port in the United Kingdom is demanded, either a United Kingdom load line certificate or a certificate having effect under this Act as such a certificate, being a certificate for the time being in force in respect of the ship, and a clearance or transire shall not be granted, and the ship may be detained, until the certificate required by this section is so produced.