The incident happened after Alison went on a two-day bender in Dartmouth, Devon, necking bottles of Lambrini wine, and chewing on hallucinogenic plants. She then boarded the empty, moored, 100-seat passenger boat with a friend and took charge of the deck.
During the hour-long boat-napping, Alison, 51, bashed in to other boats "like a pinball machine", convinced she was Johnny Depp's character in the Pirates of the Caribbean films.
More than 30 police officers, paramedics, and coastguard rescuers were called to halt the swashbuckler. Ambulance technician Peter Jordan says: "We saw it drifting down the estuary. I then heard a voice saying they were pirates."
Drunken Alison then shouted in her best pirate voice: "I believe this is out of your jurisdiction – what are you going to do now?"
When police finally got on board and arrested her she told them: "We would have ended up in St Tropez if we hadn't been caught."
Torquay magistrates court heard that the Dart Princess ferry – normally used for wildlife cruises – suffered £1500 worth of damage in the hijack.
Alison was jailed for 122 days for aggravated vehicle taking.
"The damage caused made it quite an expensive night," says PC Clare Pearson, who investigated the crime.
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