BW LPG's offer to acquire Dorian LPG is in the "best interest of all Dorian shareholders," a New York-based investment adviser said in a letter to Dorian's board of directors.

Bob Robotti, whose Robotti & Co has $596m in assets under management, said in a letter addressed to Dorian chairman and chief executive John Hadjipateras that BW's $1.1bn offer for Dorian represents a "compelling offer."