(1)If an inland [mechanically propelled vessel] [Substituted by Act 35 of 1977, Section 5, for " steam-vessel" (w.e.f. 1.5.1978).] has been destroyed or has been rendered permanently unfit for service, the owner of the vessel shall, with the least practicable delay, report the fact to the registering authority of the place where the vessel is registered and shall also forward to that authority, along with the report, the certificate of registration of the vessel and thereupon the registering authority shall have the certificate of registration cancelled.