Which events from Herman Melville’s life became the basis for Omoo?

The novel Omoo (1847) is based on Herman Melville’s personal experiences in the South Pacific following his time in the Marquesas Islands. Specifically, the book draws from the following events:

• Participation in a Mutiny: While serving on the Australian whaler Lucy Ann, Melville joined a mutiny that resulted in the crew being imprisoned in a Tahiti jail.12
• Escape and Wanderings: After escaping from the Tahitian jail, Melville spent time traveling through the islands as a drifter.12
• Companionship: During these travels, he was accompanied by the former doctor of the Lucy Ann, a character referred to as "Long Ghost".12

Melville utilized these experiences to craft a narrative that was more lighthearted and episodic than his previous work, Typee, while also expressing his criticism of the impact colonial and missionary activities had on native Tahitian peoples.12