"Safety Advice for Coasteering Providers"(PDF). National Coasteering Charter (third ed.). November 2015. pp. 6, 12, 17–18, 19. Archived(PDF) from the original on 26 June 2022. Retrieved 21 June 2022.
"Safety Advice for Coasteering Providers"(PDF). National Coasteering Charter (third ed.). November 2015. pp. 6, 12, 17–18, 19. Archived(PDF) from the original on 26 June 2022. Retrieved 21 June 2022.