68. The Registrar, or the appropriate person, shall issue to the owner of the ship a certificate of provisional registration in a form approved by the Secretary of State.The certificate shall have the effect of a certificate of registry until:—
(a)the expiration of three months from its date of issue, or
(b)the ship’s arrival in the United Kingdom, or
(c)termination by the Registrar on request from the owner, whichever shall first occur.