Section 3 of the Principal Act is amended as follows:(a) by inserting the following definition after the definition of Board :certificate of survey means a certificate of survey issued by the Authority or by an equivalent body, whether in this State or not, that warrants that a vessel complies with (a) the vessel survey requirements of the Marine and Safety (Vessel Safety Standards) By-laws 2000 made by the Authority under section 42 ; or(b) any equivalent legislation;(b) by inserting the following definitions after the definition of commencement day :commercial purpose , in relation to the operation of a vessel, means operating the vessel (other than as a punt) (a) for any valuable consideration; or(b) as, or in connection with, a business; or(c) as, or in connection with, a transport or ferry service provided for the benefit of paying or non-paying passengers; or(d) for research; or(e) in connection with tourist accommodation; or(f) in connection with any other kind of commercial transaction;commercial vessel means a vessel that is operated for a commercial purpose;(c) by inserting the following definition after the definition of transfer day :unseaworthy means unseaworthy within the meaning of section 38B(1) ;