** Shares of Bhagwan Marine BWN.AX rise as much as 20.7% to A$0.670, biggest intraday pct gain since Dec. 25, 2015

** Marine services firm says it expects pro-forma EBITDA for 1H25 in the range of A$26 million ($16.76 million) to A$28 million, up 26% to 36% on pcp

** Stock hits highest level since Sept. 2

($1 = 1.5509 Australian dollars)

(Reporting by Adwitiya Srivastava in Bengaluru)

((Adwitiya.Srivastava@thomsonreuters.com;))