** Shares of Australia's Bhagwan Marine BWN.AX rise as much as 7% to A$0.615, their highest level since August 18

** Stock marks its biggest intraday pct rise since September 24

** The marine solutions co announces two-year extension to its existing contract for the provision of marine, cargo, and offtake support services to Jadestone Energy and Vermilion Energy

** The extension is valued at A$25 million ($16.49 million)

** Stock is down 5.6% YTD, including the session's moves

($1 = 1.5161 Australian dollars)

(Reporting by Anjali Singh in Bengaluru)

((anjali.singh2@thomsonreuters.com;))