This guidance for ship managers has been based on a combination of sources, such as Shell Health experiences setting up champion networks elsewhere and online sources including:

https://iabcemena.com/uk/10-steps-to-building-an-employee-champions-network/

https://www.generatortalent.com/who-are-change-champions-and-how-can-you-spot-them/

https://www.slideshare.net/thechangesource/how-to-establish-a-network-of-change-champions

https://thechangesource.wordpress.com/2013/04/14/how-to-launch-a-network-of-change-champions-in-7-steps/