(Corrects day of the week in paragraph 1)
March 9 (Reuters) - Shares in German submarine systems maker Gabler Group rose in their debut on the Frankfurt stock exchange on Monday, opening at 47.2 euros ($54.56) per share compared to its offer price of 44 euros per share.
The company, which primarily makes hydraulic and electrical mast systems for submarines, was valued at 266 million euros at its final offer price, with 49.9% of shares in free float.
($1 = 0.8651 euros)
(Reporting by Bernadette Hogg, Editing by Linda Pasquini)
