Malaysia’s Petra Perdana Berhad (PPB) said its wholly-owned subsidiary Intra-Oil Services Berhad recently signed a Memorandum of Agreement to acquire a vessel from Norway’s International Offshore Services ANS for US$6.25 million in cash.   The 1983-built MV Lady Elaine is an anchor handling supply tug vessel, and will boost Petra’s core businesses in providing engineering,…