From Part B of the Seafarers Training, Certification and Watchkeeping Code which is annexed to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) Convention.
Part B is non-mandatory.
PART 5 - GUIDANCE ON PREVENTION OF DRUG AND ALCOHOL ABUSE
34 Drug and alcohol abuse directly affect the fitness and ability of a seafarer to perform watchkeeping duties. Seafarers found to be under the influence of drugs or alcohol should not be permitted to perform watchkeeping duties until they are no longer impaired in their ability to perform those duties.
35 Administrations should consider developing national legislation:
- prescribing a maximum of 0.08% blood alcohol level (BAC) during watchkeeping duty as a minimum safety standard on their ships; and
- prohibiting the consumption of alcohol within 4 hours prior to serving as a member of a watch.
Drug and alcohol abuse screening programme guidelines
36 The Administration should ensure that adequate measures are taken to prevent alcohol and drugs from impairing the ability of watchkeeping personnel, and should establish screening programmes as necessary which:
- identify drug and alcohol abuse;
- respect the dignity, privacy, confidentiality and fundamental legal rights of the individuals concerned; and
- take into account relevant international guidelines.
Guidance on establishing programmes
37 Those involved in establishing drug and alcohol prevention programmes should take into account the guidance contained in the ILO publication "Drug and Alcohol Prevention Programmes in the Maritime Industry (A Manual for Planners)", as may be amended*".
"* Annex III of this Manual includes "Guiding Principles on Drug and Alcohol Testing Procedures for Worldwide Application in the Maritime Industry". These Guiding Principles were adopted by the Joint ILO/WHO Committee on the Health of Seafarers (May 1993)."