Safety briefing hard to understand, says witness Torie Mackinnon faces a manslaughter charge. SAFETY instructions delivered on a fatal Mornington Peninsula dolphin-swim tour were rapid and hard to hear, one witness will allege in a case against the boat's operator. Moonraker Dolphin Swims managing director Torie Mackinnon, 30, faces a manslaughter charge after Paul McVeigh was killed on a tour when he was allegedly reversed over by the company's boat on December 13 last year. Magistrate Peter Reardon said the case against the former Young Victorian Business Woman of the Year is that the conduct of the tour - including the safety briefing - was grossly inadequate. Defence counsel Tony Hargreaves said the only one of the 12 witnesses who actually saw Mr McVeigh jump off the back of the boat should be cross-examined in a preliminary hearing if the prosecution maintains that the accuracy of the safety briefing is relevant. Melbourne Magistrates" Court heard the witness told police he didn't hear enough of the briefing to know whether Mr McVeigh disembarked the vessel earlier than instructed, as he was listening to his iPod. A Singaporean witnesses claims they did not hear the entire safety briefing because the person delivering it spoke "rather fast," the boat's motor was noisy and they were not paying full attention. Mr Reardon granted the defence permission to cross-examine the four witnesses that the prosecution opposed, including an expert who will give evidence regarding the driver's line of sight. Ms Mackinnon faces five other charges over the incident: culpable driving, recklessly driving a vessel in reverse, endangering persons onboard a vessel and navigating a vessel without local knowledge in waters requiring a certificate. Ms Mackinnon runs Moonraker Dolphin Swims, a tour boat operator based in Sorrento that operates from October until May, taking tourists on dolphin and seal tours. Moonraker is an award-winning "eco-tourism" and "responsible travel" business. Ms Mackinnon was named Telstra Young Business Woman of the Year in 2012 after doubling the turnover of the family dolphin swim business in less than three years. She left school at 17 and became the state's youngest commercial boat captain. Ms Mackinnon and her mother Sandy Mackinnon have been operating Moonraker Dolphin Swims in the Port Phillip Bay since September 1990, according to their website. Ms MacKinnon - who is on bail - will appear in court for a four-day committal hearing next March. Originally published as Dolphin-swim leader in court over tragedy