Section 27. Certificates to be held by master and engineer of vessel of less than forty horsepower

27. Certificates to be held by master and engineer of vessel of less than forty horsepower. —An inland[1] [mechanically propelled vessel] having engines of less than[2] [forty] nominal horse-power shall not proceed on any voyage unless she has— (a) as her master a person possessing a scrang‟s certificate granted under this Act, or any certificate referred to in clause (a) of section 26, and (b) as her engineer a person possessing a second-class engine-driver‟s certificate granted under this Act, or any certificate referred to in clause (b) of section 26: Provided that a[1] [mechanically propelled vessel] shall be deemed to have complied with this section if she has as her master and engineer a person possessing both a certificate referred to in clause (a), and a certificate referred to in clause (b), of this section.