The primary piece of legislation relevant to Health and Safety in Guernsey is the "The Health and Safety at Work (General) (Guernsey) Ordinance, 1987." It sets out the general duties which employers have towards employees and members of the public, and employees have to themselves and to others. It is criminal law.
Guidance on how to comply with SOME aspects of the ordinance when working in docks can be found in the Approved Code of Practice (ACOP) L148.*
Guidance on how Guernsey Ports expect you to work safely can be found in;
Guide for Contractors.*
Code of Practice in Commercial Zones.*
*see Guernsey Harbours' website for further information