 FORTH Ports has hoisted the "for sale" sign over Edinburgh's Ocean Terminal as the recently acquired group focuses on investing tens of millions of pounds in the "re-industrialisation" of its assets on the capital's waterfront.  The group is seeking GBP100 million for the flagship shopping centre which comes with about 10 acres of adjacent development land.  The Waterfront Plaza to the east of Ocean Terminal has planning consent for a mixed-use "urban village" development including a hotel and other business and leisure facilities.  It is expected that the eventual buyer, likely to be a retail fund, will have to refinance Ocean Terminal's GBP68m of debt. The centre, which opened in 2001, was formerly a joint venture between Forth Ports and HBOS. In 2009, the bank's new owners, Lloyds Banking Group, sold its 50 p 