INTERNATIONAL SEARCH REPORT ntemauonal Application No. PCT/NZ 99/00229 Box 1 Observations where certain claims were found unsearchable (Continuation of item 2 of first sheet) This international search report has not been established in respect of certain claims under Article 17 (2) (a) for the following reasons: 1. Claims Nos.: because they relate to subject matter not required to be searched by this Authority, namely: 2.Claims Nos. : because they relate to parts of the international application that do not comply with the prescribed requirements to such an extent that no meaningful international search can be carried out, specifically: 3. Claims Nos.: because they are dependent claims and are not drafted in accordance with the second and third sentences of Rule 6.4 (a) Box II Observations where unity of invention is lacking (Continuation of item 3 of first sheet) This International Searching Authority found multiple inventions in this international application, as follows: 1. Claims 1-8 directed to water jet propulsion unit including a pressure control priming device located between two contra rotating impellers. 2. Claim 9 directed to a propulsion unit having two contra rotating impellers whereby the downstream impeller has blades of adjustable pitch. 1. As all required additional search fees were timely paid by the applicant, this international search report covers all searchable claims 2. As all searchable claims could be searched without effort justifying an additional fee, this Authority did not invite payment of any additional fee.- 3. As only some of the required additional search fees were timely paid by the applicant, this international search report covers only those claims for which fees were paid, specifically claims Nos.: 4. a No required additional additional search were timely timely paid the applicant. Consequently, this international search report is restricted to the invention first mentioned in the claims; it is covered by claims Nos.: 1-8 1-8 Remark on Protest The additional search fees were accompanied by the applicant's protest. No protest accompanied the payment of additional search fees. INTERNATIONAL SEARCH REPORT International application No. Information on patent family members PCT/NZ 99/00229 This Annex lists the known"A"publication level patent family members relating to the patent documents cited in the above-mentioned international search report. The Australian Patent Office is in no way liable for these particulars which are merely given for the purpose of information. Patent Document Cited in Search Patent Family Member Report WO 98/21090 AU 49713/97 CA 2262662 EP 935555 WO 94/08845 AU 51205/93 CA 2146983 EP 664756 NZ 256488 US 5634831 END OF ANNEX