Robertson will also oversee the funds' in-house administration business Maritime Financial Services.
He replaces former chief executive Terry Newson who left the fund in November 2005 to join financial services company Future Plus as a chief investment officer.
Robertson worked previously with retail sector industry fund, Retail Employees Superannuation Trust (REST).
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At REST Robertson was general manger of the fund's corporate business Acumen.
"The fund is looking to Peter to advance the trustees' intention to develop new service areas for members," SERF chair John Coombs said.
