Central Coast Mariners figurehead Peter Turnbull has left A-League club Mariners figurehead Peter Turnbull. CENTRAL Coast Mariners figurehead Peter Turnbull has left the club this morning, seven months after handing ownership of the Mariners over to fellow shareholder Mike Charlesworth. Mariners staff were dumbfounded to learn the news this morning, with a formal announcement likely to come this afternoon. However, it's unclear who will run the club on a day to day basis once Turnbull leaves at the end of the week. Originally a director and investor in Sydney FC, Turnbull - a successful property developer - had bought into the Mariners in 2007, and become majority shareholder and chairman. He was instrumental in Graham Arnold's arrival in 2010, but struggled to fund the club after the GFC hit his own businesses. Charlesworth joined as a co-director in 2010 and in April assumed full ownership, jettisoning long-time CEO John McKay and moving Turnbull into the role. Despite his financial troubles, Turnbull sunk a huge amount of his time and several millions of dollars into the club, at considerable a cost to his own family.