If you are a seafarer, you cannot do certain safety jobs on a ship if you have too much alcohol in your system. You are not allowed to do these jobs if your breath test shows more than 250 micrograms of alcohol per litre of breath, as checked under section 40I. You also cannot do these jobs if your blood test shows more than 50 milligrams of alcohol per 100 millilitres of blood, as checked under section 40L or 40M.

If you try to do these jobs with too much alcohol in your system, you will be breaking the rules. The rules are in place to keep you and others safe while working on ships. You must follow these rules to stay safe.

You can find more information about how these rules are enforced by looking at the other sections of the law, such as section 40I, section 40L, and section 40M.